The Arrow BD12 Storeroom Ball Knob Exit Device Trim provides secure, key-controlled exterior entry for compatible Arrow commercial panic and exit devices.

Featuring Arrow's traditional B-style ball knob, D-style round rose, and keyed storeroom function, the BD12 is designed for commercial door openings where outside entry must remain restricted while interior emergency egress stays available.

The 12 Storeroom Function keeps the exterior knob rigid at all times. Authorized personnel use the key to retract the connected exit device's latchbolt and open the door. The key can only be removed when the trim is returned to its locked condition.

Unlike the Arrow BD01 Passage Trim, which permits unrestricted exterior knob operation, the BD12 is intended for secured commercial entrances, storerooms, maintenance areas, and employee-only openings.

Manufactured with a wrought metal ball knob and matching round rose, the BD12 provides a traditional architectural appearance with commercial-grade construction.

The Arrow BD12 is compatible with designated Arrow exit device families, including the AL500 Alarmed Rim Exit Device, S1150 Surface Vertical Rod, S1250 Rim, ED910, and PEC910 Series.

When installed with a compatible Arrow AL500 alarmed exit device, authorized key operation retracts the latch and activates the device's programmed authorized-passage interval. The BD12 itself is entirely mechanical and does not require electrical power.

Available finishes include Bright Brass, Satin Brass, Satin Bronze, Oil Rubbed Bronze, and Satin Chrome, allowing the trim to coordinate with existing commercial architectural door hardware.

Important: This product is the exterior keyed ball knob trim only. The panic exit device, pushbar, latch assembly, and other door hardware are sold separately.

Key Features and Benefits

Storeroom Function – Key-Controlled Exterior Entry

• Arrow function code 12.

• Exterior ball knob remains rigid.

• Key retracts the connected panic device latch.

• Key removable only when trim is locked.

• Prevents unrestricted exterior knob entry.

• Suitable for commercial doors requiring controlled outside access.

• Interior exit device remains independently operable.

B-Style Ball Knob

• Traditional rounded Arrow B-design knob.

• Wrought metal construction.

• Approximately 2-1/8" knob diameter.

• Durable architectural appearance.

• Designed for compatible Arrow exit devices.

D-Style Round Rose

• Matching D-style wrought rose.

• Approximately 2-9/16" diameter.

• Conceals the designated trim mounting area.

• Provides a clean commercial finish.

Standard Conventional Cylinder

• Manufacturer-listed standard-cylinder configuration.

• Key-operated storeroom function.

• Provides authorized mechanical exterior entry.

• Exact keyway and keying should be specified when ordering.

• Confirm the supplied cylinder and keys against the full finished SKU.

Compatible Arrow Exit Device Series

The Arrow BD12 is designed for compatible configurations of:

• Arrow AL500 Series Alarmed Rim Exit Devices

• Arrow S1150 Series Surface Vertical Rod Exit Devices

• Arrow S1250 Series Rim Exit Devices

• Arrow ED910 Series Rim Exit Devices

• Arrow PEC910 Series Rim Exit Devices

Verify the specific device, mounting preparation, and required installation components before ordering.

Arrow AL500 Alarm Compatibility

When installed with a compatible AL500 alarmed exit device:

• The exterior knob remains rigid.

• Authorized key operation retracts the exit device latch.

• Key operation initiates the designated authorized-passage alarm interval.

• The manufacturer's standard passage interval is 15 seconds.

• Interior pushbar emergency egress remains immediately available.

The BD12 does not include an alarm controller, battery, electronic release, or delayed-egress mechanism.

Architectural Finish Options

03 – Bright Brass

• US3 / BHMA 605.

• Polished brass architectural finish.

04 – Satin Brass

• US4 / BHMA 606.

• Satin brass finish.

10 – Satin Bronze

• US10 / BHMA 612.

• Traditional satin bronze finish.

10B – Oil Rubbed Bronze

• US10B / BHMA 613.

• Dark oxidized bronze appearance.

26D – Satin Chrome

• US26D / BHMA 626.

• Satin chrome commercial hardware finish.

Non-Handed Configuration

• Designed for compatible left-hand and right-hand installations.

• No separate handed knob trim designation required.

• Verify the mating exit device and mounting preparation.

Technical Specifications

Specification	Details
Manufacturer	Arrow Lock & Door Hardware
Parent Company	ASSA ABLOY
Model	BD12
Product Type	Exterior Exit Device Knob Trim
Function	Storeroom
Function Code	12
Exterior Knob Operation	Always Rigid
Entry Method	Key Retracts Latch
Key Removal	Only in Locked Condition
Knob Design	B – Ball
Rose Design	D – Round
Knob Construction	Wrought Metal
Rose Construction	Wrought Metal
Knob Diameter	Approximately 2-1/8"
Rose Diameter	Approximately 2-9/16"
Trim Projection	Approximately 2-11/16"
Cylinder Configuration	Standard Conventional
Keyway	Confirm by Complete SKU
Handing	Non-Handed
Available Finishes	03, 04, 10, 10B, 26D
Compatible Exit Devices	AL500, S1150, S1250, ED910, PEC910
Electrical Power	Not Required
Alarm Electronics	Not Included
Exit Device Included	No
Selling Unit	Each

How the Arrow BD12 Storeroom Trim Works

1. Door Secured

With the connected exit device latched, the outside BD12 ball knob remains rigid.

2. Authorized Key Inserted

A user inserts the appropriate key into the exterior knob cylinder.

3. Key Operated

Turning the key operates the connected exit device's latch-retraction mechanism.

4. Door Entry

With the latch retracted, the authorized user opens the door.

5. Return to Locked Condition

After use, the key is returned to the designated locked position and removed.

6. Interior Emergency Egress

Occupants can still operate the interior exit device pushbar without using the exterior key.

Recommended Commercial Applications

Warehouses and Distribution Centers

• Secured employee entrances

• Inventory storage areas

• Warehouse office access doors

• Maintenance rooms

Retail Stores and Shopping Centers

• Rear service entrances

• Employee-only stockroom doors

• Restricted receiving areas

• Back-of-house entrances

Commercial Office Buildings

• Restricted administrative spaces

• Building utility rooms

• Secure employee doors

• Maintenance-area access

Schools and Institutional Facilities

• Authorized personnel entrances

• Equipment storage rooms

• Maintenance departments

• Approved restricted-access openings

Government and Municipal Buildings

• Facility service entrances

• Secured operational areas

• Maintenance storage spaces

• Administrative access doors

Standard Product Package

This listing identifies:

• (1) Arrow BD12 Storeroom Ball Knob Exit Device Trim in the selected architectural finish.

• Standard-cylinder configuration as listed by the manufacturer.

Verify factory package contents, including the cylinder, keys, spindle or coupling components, and mounting hardware, before fulfillment.

Not Included

• Panic exit device or pushbar

• Main exit device chassis

• Rim or vertical rod latch assembly

• Alarm electronics

• Alarm battery

• Access control controller

• Door or frame

Installation Information

Professional installation by a commercial locksmith or door hardware technician is recommended.

Step 1 – Verify Compatibility

Confirm the existing Arrow exit device model supports BD12 trim.

Step 2 – Confirm Required Function

Verify that the door requires storeroom operation with a rigid outside knob and key-controlled entry.

Step 3 – Select Finish and Keying

Choose the architectural finish and verify the required cylinder keyway and keying arrangement.

Step 4 – Verify Door Preparation

Confirm door thickness, trim preparation, and available mounting clearance.

Step 5 – Install the Exterior Trim

Mount the ball knob and rose assembly according to Arrow's instructions.

Step 6 – Connect the Latch Mechanism

Install the required spindle or operating components between the trim and the compatible exit device.

Step 7 – Test Key Operation

Confirm the key correctly retracts the latch and returns to the locked position.

Step 8 – Verify Exterior Security

Ensure the outside knob remains rigid when the key is removed.

Step 9 – Verify Interior Egress

Confirm the panic pushbar remains independently operable.

Step 10 – Check Alarm Interaction

On AL500 installations, verify that authorized key operation triggers the appropriate alarm passage interval without interfering with emergency egress.

Important Ordering Notes

• BD12 is a storeroom trim, not a passage trim.

• Exterior knob remains rigid at all times.

• Key retracts the compatible exit device latch.

• Standard cylinder configuration; confirm exact keyway and keying.

• Not a complete panic exit device.

• Not an electronic lock or alarm.

• Confirm compatibility with the exact exit device series.

• Verify fire-door compatibility when used on a rated opening.

• Round knob trim may not satisfy accessibility requirements for doors on accessible routes; a compliant lever or other approved operable trim may be necessary.

• Finish and keying must be confirmed before ordering.

Why Choose the Arrow BD12?

The Arrow BD12 Storeroom Ball Knob Exit Device Trim offers secure, key-controlled exterior entry for compatible Arrow commercial panic hardware.

Its traditional wrought ball knob, matching round rose, rigid storeroom operation, standard conventional cylinder configuration, and multiple architectural finishes make it a practical option for commercial door replacement and maintenance.

For commercial contractors, locksmiths, and facility maintenance departments, the Arrow BD12 provides a reliable solution for restricting exterior access while preserving independent interior exit device operation.