The DORMA 7000 and 8000 Series Door Saver replacement arms provide parallel-arm opening protection on compatible DORMA surface hydraulic door closers. Choose the DS standard cushioned stop, the SDS extra-heavy-duty spring-cushioned stop, or the DST cushioned stop with thumb-turn hold-open. All three factory choices have 689 Aluminum Painted finish. Each model is a separate, non-interchangeable mechanical arm configuration sharing the same compatible closer series.

Factory SKU and Variant Selection

Only the available factory combinations shown below are sold. Confirm the exact model, mounting geometry, function and finish, not just the product picture.

Factory SKU	Hardware Configuration	Product Category
BEST-DS-689	Door Saver Arm Model: DS - Cushioned Stop (No Hold Open)	Door Closer Arm
BEST-DST-689	Door Saver Arm Model: DST - Thumb-Turn Hold Open	Door Closer Arm
BEST-SDS-689	Door Saver Arm Model: SDS - Spring-Cushioned Stop	Door Closer Arm

Key Configuration Differences

DS 689 is the standard heavy-duty cushioned Door Saver parallel arm with non-hold-open operation. SDS 689 is a spring-assisted, extra-heavy-duty cushioned parallel stop arm, also non-hold-open. DST 689 adds manual thumb-turn hold-open, which must only be installed where mechanical hold-open is allowed. Use the exact DORMA 7000/8000 arm required by the closer and door hardware schedule. These are not the same parts as the BEST EHD9000 DS90 and DST90 arms.

Technical Selection and Installation Checklist

1. For compatible DORMA 7000 and 8000 Series surface door closer bodies
2. Push-side parallel-arm mounting for suitable commercial door/frame geometry
3. DS and SDS are non-hold-open; DST is manually held open by thumb-turn
4. Verify actual door/frame reveal, stop angle, door swing, required brackets and reinforcement
5. Use 689 Aluminum Painted factory finish with compatible arm/body hardware
6. Avoid unapproved mechanical hold-open on labeled fire-door assemblies
7. Test installation, cushion action, approved opening stop and free egress

Product Scope and Shipping Information

Each selection includes one complete DORMA DS, SDS or DST closer arm assembly, not the hydraulic closer body, complete door, motorized operator or special brackets. All three original SKUs retain their selling price, compare-at price, recorded cost, 5 lb configured shipping weight and separate warehouse stock.

Detailed Technical Specifications by Original Model

The following model-by-model technical information is retained from the original product descriptions so installers can review all specifications and compatibility notes before selecting a variant.

Detailed Manufacturer Model Information: BEST-DS-689

The technical specifications and ordering notes in this section apply to this exact factory model or finish selection.

DORMA DS 689 Door Saver Parallel Closer Arm is a heavy-duty, non-hold-open replacement arm for compatible DORMA 7000 and 8000 Series surface door closers. Designed for push-side parallel-arm installation, it incorporates a cushioned opening function to help control door movement near the selected stop position. The 689 Aluminum Painted (US28) finish coordinates with common commercial door hardware.

Use the DS 689 when an existing compatible door closer needs a replacement Door Saver arm, or when an installation requires the manufacturer's specified non-hold-open cushioned parallel-arm configuration. The arm is non-handed for compatible left- or right-hand installations.

Key Features & Benefits

• Door Saver cushion: Heavy-duty parallel closer arm with integral cushioned opening function.
• Non-hold-open operation: Model DS provides cushioning/stop functionality without a mechanical hold-open feature.
• Adjustable installation positions: Manufacturer family is specified for stop positions of 85°, 90°, 100°, or 110°, subject to the installation and door/frame conditions.
• Non-handed: For compatible left-hand and right-hand door installations.
• Aluminum Painted finish: Finish code 689 / US28.
• Commercial replacement part: Arm assembly only; ideal for commercial door closer service and repair.

Technical Specifications

• Manufacturer: DORMA / dormakaba
• Part Number: DS 689 (also listed as DS-689)
• Product Type: Door Saver cushioned parallel door closer arm
• Compatible Closers: DORMA 7000 and 8000 Series; verify the exact closer model and template
• Mounting: Parallel arm, push side
• Hold Open: No
• Handing: Non-handed
• Stop Positions: 85°, 90°, 100°, or 110° as permitted by conditions
• Maximum Door Opening: Up to 110°, subject to installation conditions
• Finish: 689 – Aluminum Painted (US28)
• Quantity: One arm assembly
• Complete Door Closer Included: No

Common Applications

• Commercial office and retail entrances
• Schools, hospitals, and institutional facilities
• Industrial and warehouse pedestrian doors
• Repair and maintenance of compatible DORMA surface door closers
• High-traffic openings where a cushioned parallel arm is specified

Installation & Compatibility

Before ordering, confirm the manufacturer and model of the existing closer, that the door uses a parallel-arm/push-side mounting arrangement, the desired stop angle, and the required finish. Use the applicable DORMA installation instructions and mounting template. The DS non-hold-open arm is different from DST or other hold-open Door Saver arm configurations; do not assume interchangeability.

Shipping Information

Shipping method: Standard parcel shipment, typically UPS Ground when the final packed dimensions and destination permit. Quantity: One arm assembly per unit ordered. Packaging: Protective carton appropriate for a metal door closer arm. Shipping weight and carton dimensions: Not manufacturer-verified for this exact SKU; the actual boxed weight and dimensions must be measured before using carrier-calculated Shopify rates or printing UPS labels.

Freight, insurance, handling, and transit time are determined by the shipping destination and the options displayed at checkout. The hydraulic door closer body and unrelated mounting accessories are not included.

Why Choose DORMA DS 689?

The DS 689 provides the specified non-hold-open Door Saver arm function in a durable commercial closer accessory, offering cushioned parallel-arm operation and a coordinated Aluminum Painted finish for compatible DORMA installations.

Model & Configuration Buying Guide

Product: DORMA DS 689 Door Saver Parallel Arm – Non-Hold Open | Aluminum Painted. Manufacturer/distributor designation: dormakaba / DORMA. This product is part of the Door Closer Arm category and should be selected by its actual factory ordering code, intended application and installed door hardware. Use the exact SKU when placing a replacement or construction order.

Available SKUs and Configurations

Shopify SKU	Configured Option
BEST-DS-689	Default Title

The arm assembly must match the exact closer model, mounting location, door swing, frame reveal, and opening angle. A regular or top-jamb arm is not a substitute for a parallel arm or a stop/track arrangement. The model in this listing is an arm or arm kit; a complete hydraulic closer body is not included unless the existing description explicitly specifies otherwise.

Model-Specific Features

Check whether this model provides hold-open, non-hold-open, spring stop, cushioned Door Saver, plunger, or track operation. Use the exact product title and SKU when matching the existing arm to the door hardware schedule; physical mounting dimensions and compatible closer body series differ by arm family.

Installer and Replacement Checklist

1. Identify the existing closer body and confirm the named compatible 7000/8000, HD8000, or EHD9000 series as applicable.
2. Measure reveal and top-rail/soffit clearances; identify push-side vs pull-side mounting.
3. Check required fasteners, arm shoe, bracket, parallel plate, spindle/shaft and stop components before ordering.
4. Observe opening-angle limits and available frame clearance; confirm backcheck and door stop requirements for heavy-traffic doors.
5. Verify mechanical hold-open is permitted at the opening; fire-rated doors may require an approved automatic-release arrangement.
6. Retain a compatible closer's hydraulic adjustment schedule and follow current manufacturer installation instructions.

Commercial Door Worx Order Verification

Before purchasing, confirm the existing opening's required hardware function and ordered SKU, and verify the current manufacturer's mounting or wiring instructions. Separate installation, keying, operator integration, compliance, and accessories may be needed beyond the item described. Quantities, finish choices and selling prices are determined by the selected store variant.

Detailed Manufacturer Model Information: BEST-DST-689

The technical specifications and ordering notes in this section apply to this exact factory model or finish selection.

The DORMA DST 689 Door Saver Arm is a heavy-duty cushioned parallel closer arm with thumb-turn hold-open, designed for compatible DORMA 7000 and 8000 Series surface-applied door closers. Its integral cushioned stop helps control the door as it approaches the selected opening position, while the manual thumb-turn detent provides a convenient hold-open option when permitted by the opening requirements.

Finished in 689 Aluminum Painted, the DST 689 is a practical OEM-style replacement for commercial door maintenance, renovations, and appropriately specified new installations. This is a complete arm assembly only, not a hydraulic door closer.

Key Features and Benefits

• Door Saver cushioned opening: Heavy-duty arm incorporates a cushioning function near the selected opening position.
• Manual thumb-turn hold-open: Adjust the detent to enable the hold-open function; pull the door to release it.
• Parallel-arm mounting: Intended for push-side installation on compatible commercial doors.
• Selectable stop/hold-open locations: Manufacturer specifies positions of 85°, 90°, 100°, or 110°, subject to installation geometry.
• Non-handed design: Can be installed on compatible left-hand and right-hand openings.
• Architectural finish: 689 Aluminum Painted coordinates with common commercial closer hardware.
• Replacement-ready: Replace the arm assembly without automatically replacing a serviceable closer body.

Technical Specifications

Specification	Details
Manufacturer	DORMA / dormakaba
Part Number	DST 689 (also distributed as MOD DST 689)
Product Type	Door Saver cushioned hold-open closer arm
Compatible Closer Families	DORMA 7000 and 8000 Series; confirm exact model
Mounting	Push-side parallel arm
Function	Thumb-turn mechanical hold-open and cushioned stop
Stop/Hold-Open Positions	85°, 90°, 100°, or 110°, conditions permitting
Maximum Opening	Up to 110°, conditions permitting
Handing	Non-handed
Finish	689 Aluminum Painted
Quantity	1 arm assembly
Hydraulic Closer Included	No

How the Hold-Open Mechanism Works

1. Activate: Rotate the thumb-turn until the detent projects from the connecting arm as directed by the installation instructions.
2. Engage: Open the door to the selected position until the detent engages the ball on the arm's mounting plate.
3. Disengage: Pull the door to release the detent, permitting the closer to resume its normal closing action.

Understanding the Door Saver Options

• DS: Cushioned Door Saver parallel arm without hold-open.
• DST: Cushioned Door Saver parallel arm with thumb-turn hold-open — this product.
• SDS: Spring Door Saver arm with spring-assisted stop, non-hold-open.
• SDST: Spring Door Saver arm with spring-assisted stop and thumb-turn hold-open.

Confirm the correct model before ordering. These arm types should not be treated as interchangeable without reference to the manufacturer template.

Recommended Applications

• Commercial office buildings and retail locations
• Schools, universities, and institutional facilities
• Hospitals and healthcare buildings where permitted
• Warehouse and industrial pedestrian doors
• Door closer service, replacement, and retrofit projects
• Commercial openings requiring an integrated cushioned stop and optional manual hold-open

Installation and Compatibility

Verify the existing closer model, door handing, push-side parallel-arm geometry, frame and door dimensions, mounting surface, and intended stop angle before purchase. The manufacturer's 8900-series installation instructions specify a minimum 1-1/8" stop width, a minimum 5" door rail under the stated stop conditions, and a minimum 24" door width under the stated conditions. Follow the applicable dimension matrix and mounting template.

Fire-door safety: Mechanical hold-open must not prevent a fire-rated door from self-closing and latching where required by code. Use only on openings and in configurations where manual hold-open is permitted.

Package contents: One DST arm assembly. The hydraulic door closer body, cover, and unrelated accessories are not included.

Shipping Information

Shipping Method: Standard commercial parcel service, such as UPS Ground, when package size and destination permit.

Package Quantity: 1 Door Saver arm assembly.

Packaging: Protective carton and suitable cushioning to prevent damage to the metal arm, mounting plate, and thumb-turn mechanism.

Shipping Weight: A verified packaged weight is not available for this exact SKU. Measure the final packed weight and carton dimensions before using Shopify live carrier rates or generating UPS WorldShip labels.

Exclusions: The closer body, cover, and other separately ordered hardware are not included in this shipment.

Why Choose the DORMA DST 689?

The DORMA DST 689 combines the convenience of an adjustable thumb-turn hold-open with a cushioned heavy-duty parallel arm, offering a manufacturer-specified replacement option for compatible commercial door closer installations.

Model & Configuration Buying Guide

Product: DORMA DST 689 Door Saver Hold-Open Parallel Arm – Aluminum Painted. Manufacturer/distributor designation: dormakaba / DORMA. This product is part of the Door Closer Arm category and should be selected by its actual factory ordering code, intended application and installed door hardware. Use the exact SKU when placing a replacement or construction order.

Available SKUs and Configurations

Shopify SKU	Configured Option
BEST-DST-689	Default Title

The arm assembly must match the exact closer model, mounting location, door swing, frame reveal, and opening angle. A regular or top-jamb arm is not a substitute for a parallel arm or a stop/track arrangement. The model in this listing is an arm or arm kit; a complete hydraulic closer body is not included unless the existing description explicitly specifies otherwise.

Model-Specific Features

Check whether this model provides hold-open, non-hold-open, spring stop, cushioned Door Saver, plunger, or track operation. Use the exact product title and SKU when matching the existing arm to the door hardware schedule; physical mounting dimensions and compatible closer body series differ by arm family.

Installer and Replacement Checklist

1. Identify the existing closer body and confirm the named compatible 7000/8000, HD8000, or EHD9000 series as applicable.
2. Measure reveal and top-rail/soffit clearances; identify push-side vs pull-side mounting.
3. Check required fasteners, arm shoe, bracket, parallel plate, spindle/shaft and stop components before ordering.
4. Observe opening-angle limits and available frame clearance; confirm backcheck and door stop requirements for heavy-traffic doors.
5. Verify mechanical hold-open is permitted at the opening; fire-rated doors may require an approved automatic-release arrangement.
6. Retain a compatible closer's hydraulic adjustment schedule and follow current manufacturer installation instructions.

Commercial Door Worx Order Verification

Before purchasing, confirm the existing opening's required hardware function and ordered SKU, and verify the current manufacturer's mounting or wiring instructions. Separate installation, keying, operator integration, compliance, and accessories may be needed beyond the item described. Quantities, finish choices and selling prices are determined by the selected store variant.

Detailed Manufacturer Model Information: BEST-SDS-689

The technical specifications and ordering notes in this section apply to this exact factory model or finish selection.

The DORMA SDS 689 Spring Door Saver Arm is an extra-heavy-duty, spring-cushioned parallel door closer arm designed for compatible DORMA 7000 and 8000 Series surface-mounted closers. Built for demanding commercial openings, the SDS combines a reinforced steel arm assembly with a spring-assisted cushion that helps absorb opening impact as the door approaches its configured stop position.

This non-hold-open arm is intended for push-side parallel-arm mounting and is supplied in 689 Aluminum Painted finish. The arm does not hold a door in the open position; after release, the compatible hydraulic closer controls its return to the closed position. The SDS 689 is a replacement arm assembly only, not a complete closer.

Key Features & Benefits

• Extra-heavy-duty construction: Designed for demanding commercial parallel-arm applications and frequent door use.
• Spring-cushioned stop: Spring-assisted opening cushion reduces abrupt impact as the door reaches its set limit.
• Non-hold-open function: No thumb-turn or mechanical hold-open mechanism.
• Push-side parallel mounting: Intended for compatible DORMA surface closers using the specified parallel-arm installation.
• Stop position options: Manufacturer mounting arrangements support 85°, 90°, 100°, and 110° limited openings, subject to installation conditions.
• Non-handed design: Suitable for compatible left- and right-hand door installations.
• 689 Aluminum Painted finish: Coordinates with common commercial door closer hardware.
• Service replacement: Replaces the specified arm without requiring replacement of a serviceable closer body.

Technical Specifications

Specification	Details
Manufacturer	DORMA / dormakaba
Part Number	SDS 689 (also listed as MOD SDS 689)
Product Type	Spring Door Saver Cushioned Arm Assembly
Compatible Closer Series	Selected DORMA 7000 and 8000 Series; verify specific model/template
Mounting	Parallel Arm / Push Side
Stop Type	Spring-Cushioned Limited Opening
Hold Open	No – Non-Hold-Open
Stop Positions	85°, 90°, 100°, or 110°, according to mounting arrangement
Maximum Designed Opening	Up to 110°, subject to conditions
Handing	Non-Handed
Arm Construction	Heavy-duty steel arm components
Finish	689 Aluminum Painted
Unit of Sale	One Complete Arm Assembly
Hydraulic Closer Body	Not Included

SDS Compared with Other Door Saver Arms

• DS: Heavy-duty cushioned Door Saver parallel arm; non-hold-open.
• DST: Heavy-duty cushioned Door Saver parallel arm with thumb-turn hold-open.
• SDS: Extra-heavy-duty spring-cushioned Door Saver parallel arm; non-hold-open — this product.
• SDST: Extra-heavy-duty spring-cushioned Door Saver parallel arm with thumb-turn hold-open.

Select the exact model required by the DORMA closer and its installation template; these arm styles should not be assumed interchangeable.

Recommended Applications

• Commercial office buildings and storefront service doors
• Schools, universities, and institutional facilities
• Healthcare and public buildings
• Industrial and warehouse personnel doors
• Commercial openings exposed to high-frequency or forceful opening
• Maintenance, repair, and replacement of compatible DORMA closer arms

Installation & Compatibility

Confirm the existing closer model, push-side mounting arrangement, door and frame construction, available clearance, desired stop angle, and manufacturer drilling template before ordering. The spring stop is designed to cushion the final portion of door travel, not to replace all required door stops or wall protection in every installation.

Important: Proper closer selection, fire-door compatibility, mounting hardware, and final adjustments must be verified for the installation. A non-hold-open arm does not by itself establish compliance for any particular fire-rated opening.

Package contents: One DORMA SDS 689 complete spring-cushioned arm assembly. Not included: Hydraulic closer body, closer cover, and separate accessories unless expressly identified by the supplier.

Shipping Information

Shipping Method: Standard parcel shipment (including UPS Ground where supported by the final carton size, weight, and destination).

Package Quantity: One complete SDS 689 arm assembly.

Packaging: Protective carton and cushioning appropriate for heavy metal arm components to minimize damage during transport.

Packaged Shipping Weight: Not manufacturer-verified for this SKU. Record the actual packed weight in Shopify before enabling live carrier-calculated shipping or creating a UPS WorldShip label.

Carton Dimensions: Warehouse measurement required. Shipping estimates and charges depend on the packed dimensions, destination, and selected service.

Shipping Note: The hydraulic door closer body is not included with this item.

Why Choose DORMA SDS 689?

The DORMA SDS 689 provides an extra-heavy-duty, spring-cushioned replacement arm for compatible commercial parallel-arm closer installations. Its non-hold-open design, manufacturer-specified stop positions, and 689 Aluminum Painted finish make it an appropriate choice when durable opening control is required.

Model & Configuration Buying Guide

Product: DORMA SDS 689 Spring Door Saver Parallel Arm – Non-Hold-Open | Aluminum Painted. Manufacturer/distributor designation: dormakaba / DORMA. This product is part of the Door Closer Arm category and should be selected by its actual factory ordering code, intended application and installed door hardware. Use the exact SKU when placing a replacement or construction order.

Available SKUs and Configurations

Shopify SKU	Configured Option
BEST-SDS-689	Default Title

The arm assembly must match the exact closer model, mounting location, door swing, frame reveal, and opening angle. A regular or top-jamb arm is not a substitute for a parallel arm or a stop/track arrangement. The model in this listing is an arm or arm kit; a complete hydraulic closer body is not included unless the existing description explicitly specifies otherwise.

Model-Specific Features

Check whether this model provides hold-open, non-hold-open, spring stop, cushioned Door Saver, plunger, or track operation. Use the exact product title and SKU when matching the existing arm to the door hardware schedule; physical mounting dimensions and compatible closer body series differ by arm family.

Installer and Replacement Checklist

1. Identify the existing closer body and confirm the named compatible 7000/8000, HD8000, or EHD9000 series as applicable.
2. Measure reveal and top-rail/soffit clearances; identify push-side vs pull-side mounting.
3. Check required fasteners, arm shoe, bracket, parallel plate, spindle/shaft and stop components before ordering.
4. Observe opening-angle limits and available frame clearance; confirm backcheck and door stop requirements for heavy-traffic doors.
5. Verify mechanical hold-open is permitted at the opening; fire-rated doors may require an approved automatic-release arrangement.
6. Retain a compatible closer's hydraulic adjustment schedule and follow current manufacturer installation instructions.

Commercial Door Worx Order Verification

Before purchasing, confirm the existing opening's required hardware function and ordered SKU, and verify the current manufacturer's mounting or wiring instructions. Separate installation, keying, operator integration, compliance, and accessories may be needed beyond the item described. Quantities, finish choices and selling prices are determined by the selected store variant.