The Arrow BD17 Classroom Ball Knob Exit Device Trim provides key-controlled exterior locking and unlocking for compatible Arrow commercial panic and exit devices.

Featuring Arrow's traditional B-style wrought ball knob, D-style round rose, and classroom locking function, the BD17 is designed for commercial openings that require the flexibility to secure exterior entry or allow unrestricted passage.

The 17 Classroom Function allows an authorized keyholder to lock or unlock the outside knob. When unlocked, the exterior knob remains operational and retracts the connected exit device latch. When locked, the exterior knob becomes rigid, preventing normal outside entry.

Unlike the Arrow BD12 Storeroom Trim, which remains locked from the outside and requires a key for each entry, the BD17 can remain unlocked for normal passage until an authorized user changes its locking condition.

The Arrow BD17 is compatible with designated Arrow exit device families, including the AL500 Alarmed Exit Device, S1150 Surface Vertical Rod, S1250 Rim, ED910, and PEC910 Series.

When properly installed with an Arrow AL500 alarmed exit device, operation of the unlocked exterior knob retracts the latch and initiates the manufacturer's standard 15-second alarm passage interval.

Manufactured with wrought metal architectural components, the Arrow BD17 is available in Bright Brass, Satin Brass, Satin Bronze, Oil Rubbed Bronze, and Satin Chrome finishes.

The standard BD17 configuration includes a conventional keyed cylinder. Keyway and keying requirements should be confirmed when ordering.

Suitable for commercial offices, educational facilities, warehouses, retail establishments, maintenance departments, and institutional buildings, the Arrow BD17 provides convenient control over exterior door access.

Important: This listing is for the exterior keyed ball knob trim only. The panic exit device, interior pushbar, latch mechanism, and alarm electronics are sold separately.

Key Features and Benefits

Classroom Function – Key Locks and Unlocks Exterior Knob

• Arrow function code 17.

• Key-operated exterior locking control.

• Exterior knob becomes rigid when locked.

• Exterior knob operates normally when unlocked.

• Allows authorized personnel to change between secured entry and passage operation.

• Interior panic exit device remains independently operable.

• No electrical power required.

B-Style Ball Knob

• Traditional Arrow B-design ball knob.

• Wrought metal construction.

• Approximately 2-1/8" diameter.

• Rounded architectural appearance.

• Designed for compatible commercial exit devices.

• Available in multiple finishes.

D-Style Round Rose

• Arrow D-design wrought round rose.

• Approximately 2-9/16" diameter.

• Conceals the exterior trim mounting preparation.

• Coordinates with the selected knob finish.

• Provides a traditional commercial door hardware appearance.

Standard Keyed Cylinder

• Conventional keyed-cylinder configuration.

• Allows authorized key operation of the classroom function.

• Key changes the exterior knob between locked and unlocked conditions.

• Standard-cylinder configuration listed by Arrow.

• Confirm keyway, keying, and supplied keys before ordering.

Compatible Arrow Exit Device Series

The Arrow BD17 is compatible with designated 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 Exit Devices

• Arrow PEC910 Series Exit Devices

Compatibility depends on the exact exit device, mounting preparation, and required operating function.

AL500 Series Alarm Compatibility

When used with a compatible Arrow AL500 alarmed rim exit device:

• The exterior knob can be locked or unlocked by key.

• When unlocked, turning the knob retracts the exit device latch.

• Knob operation initiates the manufacturer's standard 15-second passage interval.

• The alarm control system remains part of the AL500 device, not the BD17 trim.

• Interior emergency egress remains available through the panic pushbar.

The BD17 does not contain alarm electronics or a delayed-egress locking mechanism.

Five Architectural Finishes

US3 / 605 – Bright Brass

• Polished brass finish.

• Coordinates with bright brass commercial hardware.

US4 / 606 – Satin Brass

• Satin brass finish.

• Provides a subdued architectural appearance.

US10 / 612 – Satin Bronze

• Traditional satin bronze finish.

• Suitable for matching bronze door hardware.

US10B / 613 – Oil Rubbed Bronze

• Dark oxidized bronze appearance.

• Coordinates with complementary dark bronze hardware.

US26D / 626 – Satin Chrome

• Satin chrome finish.

• Commonly specified for commercial and institutional doors.

Non-Handed Configuration

• Non-handed exterior trim.

• Suitable for compatible left-hand and right-hand exit device installations.

• Final compatibility depends on the associated panic device and door preparation.

Commercial Replacement Applications

• Replacement of existing Arrow classroom knob trim.

• Conversion from compatible passage trim to keyed classroom operation.

• Restoration of exterior locking capability.

• Commercial door hardware maintenance.

• Architectural finish changes on compatible installations.

Technical Specifications

Specification	Details
Manufacturer	Arrow Lock & Door Hardware
Parent Company	ASSA ABLOY
Model	BD17
Product Type	Exterior Exit Device Knob Trim
Lock Function	Classroom
Function Code	17
Exterior Knob Operation	Key Locks or Unlocks
Locked Condition	Outside Knob Rigid
Unlocked Condition	Outside Knob Operable
Knob Style	B – Ball
Rose Style	D – Round
Knob Material	Wrought Metal
Rose Material	Wrought Metal
Knob Diameter	Approximately 2-1/8"
Rose Diameter	Approximately 2-9/16"
Cylinder Type	Standard Conventional
Keyway	Confirm by Order Configuration
Handing	Non-Handed
Finish Options	03, 04, 10, 10B, 26D
Compatible Arrow Series	AL500, S1150, S1250, ED910, PEC910
Electrical Power Required	No
Exterior Trim Function	Mechanical
Exit Device Included	No
Alarm Electronics Included	No
Selling Unit	Each

How the Arrow BD17 Classroom Trim Works

1. Door Secured

With the exterior knob locked, the knob remains rigid and does not retract the connected exit device latch.

2. Authorized Key Operation

An authorized user inserts the appropriate key and changes the exterior knob to its unlocked condition.

3. Passage Operation

Once unlocked, the exterior knob can be turned to retract the latch.

4. Door Entry

Users may enter normally without presenting a key for each opening.

5. Securing the Door

Authorized personnel use the key to return the exterior knob to its locked condition.

6. Exterior Knob Locked

The outside knob becomes rigid again, restricting normal exterior entry.

7. Interior Emergency Egress

The connected exit device's interior pushbar remains independently operable.

Recommended Commercial Applications

Schools and Educational Facilities

• Classroom entrances

• Administrative offices

• Staff access doors

• Approved institutional openings

Commercial Office Buildings

• Employee entrances

• Secured office suites

• Meeting rooms

• Restricted administrative spaces

Warehouses and Distribution Centers

• Warehouse office entrances

• Employee access doors

• Maintenance department doors

• Controlled service openings

Retail Stores and Shopping Centers

• Employee access entrances

• Back-of-house doors

• Stockroom access

• Commercial service entrances

Government and Institutional Facilities

• Administrative offices

• Maintenance rooms

• Facility support areas

• Key-controlled access openings

Standard Product Package

The standard Arrow BD17 configuration includes:

• Arrow BD17 classroom ball knob trim assembly

• Matching D-style round rose

• Standard conventional keyed cylinder

Verify the exact supplied keys, mounting hardware, spindle components, and keyway before fulfillment.

Not Included

• Arrow AL500 or other complete exit device

• Interior panic pushbar

• Rim or vertical rod latch mechanism

• Alarm electronics

• Alarm battery

• Access control panel

• Door or frame

Installation Information

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

Step 1 – Verify Exit Device Compatibility

Confirm the existing Arrow exit device accepts BD17 classroom knob trim.

Step 2 – Confirm Classroom Function

Verify that the opening requires an exterior knob that can be locked or unlocked by key.

Step 3 – Select Finish and Keying

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

Step 4 – Verify Door Preparation

Confirm door thickness, existing trim preparation, and required clearances.

Step 5 – Install the Exterior Knob Trim

Mount the BD17 knob and rose using the specified installation hardware.

Step 6 – Connect the Operating Mechanism

Connect the trim to the compatible exit device's latch-retraction mechanism.

Step 7 – Test Unlocked Operation

Verify that the unlocked exterior knob retracts the latch and permits door entry.

Step 8 – Test Locked Operation

Use the key to lock the exterior knob and verify that it remains rigid.

Step 9 – Verify Interior Egress

Confirm that the interior panic pushbar remains fully operational regardless of the exterior knob's locking condition.

Step 10 – Test Alarm Interaction

For AL500 installations, confirm the appropriate authorized-passage timing and alarm operation.

Important Ordering Notes

• BD17 is a classroom-function trim, not storeroom or passage trim.

• The outside knob can remain locked or unlocked.

• A key is used to change the exterior knob's locking condition.

• Standard conventional keyed-cylinder configuration.

• Keyway and keying must be verified before ordering.

• Non-handed design.

• The panic exit device is not included.

• Verify compatibility with the exact Arrow exit device.

• Verify fire-door assembly requirements where applicable.

• Knob-operated trim may not comply with accessibility requirements for doors on accessible routes; use approved accessible trim where required.

• Professional installation is recommended.

Why Choose the Arrow BD17?

The Arrow BD17 Classroom Ball Knob Exit Device Trim offers convenient key-controlled exterior locking for compatible Arrow commercial panic devices.

Its classroom function, durable wrought ball knob, matching round rose, standard keyed-cylinder configuration, and five architectural finishes make it a practical solution for commercial door hardware replacement and maintenance.

For commercial contractors, locksmiths, and facility maintenance departments, the Arrow BD17 provides the flexibility to maintain controlled exterior access while preserving independent emergency egress through the connected exit device.