The BEST EHD9000 DS90 and DST90 Door Saver Series comprises heavy-duty push-side parallel arm assemblies with cushioned opening stops for compatible BEST EHD9000 hydraulic surface door closers. Choose DS90 for a non-hold-open cushioned stop or DST90 for the same Door Saver arm family with manually adjustable thumb-turn hold-open. Both styles are available in aluminum, black and dark bronze factory finishes.

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-DS90-689	Arm Function: DS90 - Cushioned Stop (No Hold Open); Finish: 689 Aluminum Painted	Door Closer Arm
BEST-DS90-693	Arm Function: DS90 - Cushioned Stop (No Hold Open); Finish: 693 Black Painted	Door Closer Arm
BEST-DS90-695	Arm Function: DS90 - Cushioned Stop (No Hold Open); Finish: 695 Dark Bronze Painted	Door Closer Arm
BEST-DST90-689	Arm Function: DST90 - Thumb-Turn Hold Open; Finish: 689 Aluminum Painted	Door Closer Arm
BEST-DST90-693	Arm Function: DST90 - Thumb-Turn Hold Open; Finish: 693 Black Painted	Door Closer Arm
BEST-DST90-695	Arm Function: DST90 - Thumb-Turn Hold Open; Finish: 695 Dark Bronze Painted	Door Closer Arm

Key Configuration Differences

DS90 is a stop-only, non-hold-open closer arm: the closer returns toward closed after the door is released. DST90 adds a thumb-turn mechanical hold-open detent, which can hold the door open in the configured position until intentionally released. Both offer cushioned stops with manufacturer mounting arrangements of approximately 85, 90, 100 or 110 degrees. A mechanical hold-open arm must not be used where an unapproved hold-open would compromise a labeled fire door. These are different mechanical functions; select them only according to the hardware schedule and allowed installation.

Technical Selection and Installation Checklist

1. Compatible with appropriately configured BEST EHD9000 Series heavy-duty surface closers
2. Push-side parallel mounting with an integrated cushioned Door Saver stop
3. DS90: non-hold-open operation; DST90: manual thumb-turn hold-open mechanism
4. Verify specific mounting template, door rail clearance, reveal, stop angle and reinforcement
5. Confirm 689 Aluminum Painted, 693 Black Painted or 695 Dark Bronze finish
6. Fire-rated openings require approved hold-open or automatic closing provisions; verify with AHJ
7. Commission latch engagement, door opening stop and mechanical detent release

Product Scope and Shipping Information

The selected SKU supplies the specified BEST Door Saver arm assembly, not the EHD9000 hydraulic closer body, complete door, frame, automatic operator or independent mounting plates. All six variants retain their original price, compare-at price, unit cost, 5 lb configured shipping weight, and stock by location.

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-DS90-689, BEST-DS90-693, BEST-DS90-695

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

The BEST DS90 Door Saver Parallel Arm is a heavy-duty, non-hold-open replacement arm assembly for compatible BEST EHD9000 Series commercial surface door closers. This manufacturer-specified arm incorporates an integral cushioned opening stop to help control the door as it approaches its designed opening limit. The DS90 is intended for push-side parallel-arm mounting on properly prepared commercial door and frame openings.

With a non-handed design, the DS90 can be used on compatible left- or right-hand openings. Depending on the manufacturer installation template and available door clearance, units can be configured for stop positions of 85°, 90°, 100°, or 110°, with a maximum opening of 110° where conditions permit. The DS90 does not hold the door open; the closer returns the door toward the closed position after release.

Available in 689 Aluminum Painted, 693 Black Painted, and 695 Dark Bronze finishes. Choose the finish to match your existing closer or commercial door hardware.

Key Features & Benefits

• Heavy-duty Door Saver arm: Manufacturer-designated assembly for demanding commercial parallel-arm closer applications.
• Integrated cushioned opening stop: Provides controlled resistance near the selected stop position.
• Non-hold-open: Allows the compatible closer to return the door to the closed position without a manual hold-open latch.
• Parallel-arm mounting: Configured for push-side mounting on designated BEST EHD9000 closer installations.
• Four installation-dependent stop positions: 85°, 90°, 100°, or 110°, with a maximum opening of 110° when conditions permit.
• Non-handed: For compatible left-hand and right-hand openings.
• Three painted finish options: Aluminum (689), Black (693), and Dark Bronze (695).
• Arm-only replacement: Replace the specified arm without purchasing an entire hydraulic closer when the existing closer body is serviceable.

Product Specifications

Specification	Details
Manufacturer	BEST / dormakaba
Model	DS90
Product Type	Heavy-Duty Door Saver Parallel Closer Arm
Compatible Closer Family	BEST EHD9000 Series; confirm exact model and installation template
Mounting	Parallel arm / push side
Opening Stop	Integral cushioned opening function
Hold-Open Function	No — non-hold-open
Stop Positions	85°, 90°, 100°, or 110° depending on installation
Maximum Door Opening	110° subject to conditions
Handing	Non-handed
Finish Variants	689 Aluminum Painted / 693 Black Painted / 695 Dark Bronze
Unit of Sale	One arm assembly in selected finish
Hydraulic Closer Included	No

Available Finishes

• DS90 689 – Aluminum Painted: Neutral aluminum-color finish for commercial door hardware.
• DS90 693 – Black Painted: Black finish for coordinated architectural hardware.
• DS90 695 – Dark Bronze: Dark bronze finish for coordinating openings.

Compare BEST Door Saver Arm Options

• DS90: Heavy-duty parallel Door Saver arm with cushioned stop; non-hold-open — this product.
• DST90: Heavy-duty parallel Door Saver arm with stop and thumb-turn hold-open.
• SDS90: Heavy-duty parallel arm with spring/compression stop; non-hold-open.
• SDST90: Heavy-duty parallel arm with hold-open and spring/compression stop.

Choose the model identified by the manufacturer for the installed closer and opening. An arm with or without hold-open is not interchangeable solely based on appearance.

Recommended Applications

• Commercial office and retail doors
• Schools, hospitals, and institutional facilities
• Industrial and warehouse personnel doors
• Commercial facility maintenance and door closer repairs
• Push-side doors requiring a designated cushioned opening stop

Installation & Compatibility

Confirm the BEST EHD9000 closer model, door and frame geometry, push-side parallel mounting, available clearance, and required stop position before ordering. Use the applicable BEST/dormakaba installation instructions and manufacturer-specified mounting hardware. This arm is non-hold-open; it is not a substitute for any separately required wall stop or overhead stop where the installation calls for one.

What's included: One BEST DS90 heavy-duty parallel arm assembly in the selected finish. Not included: Hydraulic door closer body, cover, and any separately required accessories unless supplied with the specified arm package.

Shipping Information

Shipping Weight: 5 lb per arm assembly for Shopify product shipping calculations, as provided for this listing.

Shipping Method: Standard parcel shipping, including UPS Ground where service is available and the final package dimensions permit.

Quantity: One arm assembly per unit ordered.

Packaging: Protective carton with cushioning to protect the finished arm and mounting components from scratches or shipping damage.

Package Dimensions: Verify the final boxed dimensions before purchasing shipping labels or calculating dimensional weight.

Shipping Note: The hydraulic closer body is not included. Actual carrier charges and transit estimates depend on destination and service.

Why Choose BEST DS90?

The BEST DS90 provides a manufacturer-specified heavy-duty parallel Door Saver arm with a cushioned opening stop for qualifying EHD9000 closer installations. Its non-hold-open operation, adjustable stop position options, and coordinated finishes make it a practical choice for commercial door service and maintenance.

Model & Configuration Buying Guide

Product: BEST DS90 Door Saver Heavy-Duty Parallel Arm with Stop | Multiple Finishes. Manufacturer/distributor designation: BEST. 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-DS90-689	Finish: 689 Aluminum Painted
BEST-DS90-693	Finish: 693 Black Painted
BEST-DS90-695	Finish: 695 Dark Bronze

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-DST90-689, BEST-DST90-693, BEST-DST90-695

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

The BEST DST90 Door Saver Arm is a heavy-duty parallel door closer arm with an integral cushioned stop and adjustable thumb-turn hold-open. It is designed for compatible BEST EHD9000 Series commercial surface door closers and is intended for push-side parallel-arm installations on suitable commercial openings.

Unlike the standard DS90 non-hold-open arm, the DST90 includes a manually operated thumb-turn detent that can hold the door open at its installed stop position when activated. The Door Saver cushioning helps reduce abrupt opening impact at the configured limit. The arm is non-handed for properly configured left-hand and right-hand doors.

Manufacturer installation arrangements support stop or stop-and-hold-open settings of 85°, 90°, 100°, or 110°, with a maximum door opening of 110° where door, frame and installation conditions permit. Choose 689 Aluminum Painted, 693 Black Painted, or 695 Dark Bronze to coordinate with existing commercial door hardware.

Key Features & Benefits

• Adjustable thumb-turn hold-open: Manual detent engages at the configured opening position and releases when the door is pulled away from hold-open.
• Integrated Door Saver cushioning: Helps absorb opening impact near the selected stop position.
• Heavy-duty commercial construction: Designed for compatible BEST EHD9000 Series closer installations.
• Push-side parallel-arm mounting: Manufacturer-specified configuration for applicable commercial openings.
• Selectable stop or hold-open positions: 85°, 90°, 100°, or 110°, subject to installation conditions.
• Non-handed: Suitable for properly configured right-hand or left-hand doors.
• Coordinated painted finishes: 689 Aluminum, 693 Black, and 695 Dark Bronze.
• Arm-only replacement: Repair or upgrade an existing compatible closer installation without replacing a serviceable hydraulic closer body.

Technical Specifications

Specification	Details
Manufacturer	BEST / dormakaba
Model	DST90
Product Type	Heavy-Duty Door Saver Parallel Arm with Thumb-Turn Hold-Open
Compatible Closer Series	BEST EHD9000; confirm exact closer and installation template
Mounting	Parallel arm / push side
Stop Function	Integral cushioned opening stop
Hold-Open Type	Manual thumb-turn detent
Stop / Hold-Open Settings	85°, 90°, 100° or 110°, depending on installation
Maximum Door Opening	Up to 110°, conditions permitting
Handing	Non-handed
Available Finishes	689 Aluminum Painted / 693 Black Painted / 695 Dark Bronze
Shipping Weight	5 lb per unit (provided shipping weight)
Quantity	One arm assembly in selected finish
Hydraulic Closer Included	No

Finish Options

• DST90 689 — Aluminum Painted: Aluminum-color painted architectural finish.
• DST90 693 — Black Painted: Black finish for matching dark commercial door hardware.
• DST90 695 — Dark Bronze: Dark bronze painted finish for coordinated openings.

How the Thumb-Turn Hold-Open Works

1. Activate: Turn the thumb adjustment until its detent projects from the connecting arm as described in the manufacturer's instructions.
2. Engage: Swing the door to its configured hold-open position until the detent engages the ball on the mounting plate.
3. Release: Pull the door to disengage the detent so the compatible closer can resume normal closing.

Compare BEST EHD9000 Door Saver Arms

• DS90: Door Saver cushioned parallel arm without hold-open.
• DST90: This product — cushioned parallel arm with thumb-turn hold-open.
• SDS90: Spring Stop Door Saver parallel arm without hold-open.
• SDST90: Spring Stop Door Saver parallel arm with thumb-turn hold-open.

These arm assemblies have different functions and should not be substituted without verifying the BEST installation template and opening requirements.

Recommended Applications

• Commercial office and retail entrances
• Industrial and warehouse personnel doors
• School, healthcare, and institutional openings where manual hold-open is permitted
• BEST EHD9000 closer repair and maintenance projects
• Push-side parallel-arm doors requiring cushioned opening control and adjustable manual hold-open

Installation & Compatibility

Confirm the existing closer is a compatible BEST EHD9000 model and verify the door and frame preparation, mounting side, clearance, required stop angle, and applicable manufacturer installation instructions. Test the hold-open mechanism after installation and ensure the door operates properly when the detent is released.

Life-safety caution: Do not use manual mechanical hold-open on an opening required to self-close and latch for fire protection unless the completed installation is specifically approved and code compliant. Refer to local requirements and manufacturer guidance.

Included: One BEST DST90 arm assembly in the selected finish. Not included: The hydraulic closer body, closer cover, or independently ordered accessories.

Shipping Information

Configured Shipping Weight: 5 lb per arm assembly, as provided for this product.

Shipping Method: Standard commercial parcel service, such as UPS Ground, when supported by the destination and package dimensions.

Package Quantity: One DST90 arm assembly per unit purchased.

Packaging: Protective carton and cushioning to protect the arm components, finished surfaces, and thumb-turn detent during shipment.

Package Dimensions: Verify the finished carton dimensions for accurate carrier-calculated shipping and labels. Carrier dimensional weight may affect the final rate.

Exclusions: Closer body and other separately ordered door hardware are not included.

Why Choose the BEST DST90?

The BEST DST90 combines a heavy-duty Door Saver cushioned stop with a convenient thumb-turn hold-open mechanism, offering a manufacturer-specified option for compatible EHD9000 parallel-arm installations where manual hold-open is permitted.

Model & Configuration Buying Guide

Product: BEST DST90 Door Saver Heavy-Duty Parallel Arm – Thumb-Turn Hold Open | Multiple Finishes. Manufacturer/distributor designation: BEST. 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-DST90-689	Finish: 689 Aluminum Painted
BEST-DST90-693	Finish: 693 Black Painted
BEST-DST90-695	Finish: 695 Dark Bronze

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.