The Notifier DR-B4R is a B-size door for a Notifier CAB-4 series cabinet. Specifically, it is the window-style, two-tier door in red. The door accepts two chassis. In addition, it ships with a lock, two keys, and the hardware needed for the SBB-B4 backbox.
Notifier DR-B4R fit and intended cabinet
First, the door fits the two-chassis B-size CAB-4 backbox. Then, the integrated window gives a clear view of the panel display and trouble LEDs. As a result, an attended console reads at-a-glance without unlocking the cabinet.
In addition, the installer hinges the door on the right or left side in the field. Therefore, the cabinet adapts to either side of the mounting wall. Furthermore, the door opens a full 180° for service access.
Key specifications
- Manufacturer: NOTIFIER (Honeywell)
- Product type: CAB-4 series locking door, window
- Size: B-size, two tiers (accepts 2 chassis)
- Color: Red
- Material: 16-gauge steel
- Window: Built-in
- Hinge: Pin-type, right or left-hand selectable in the field; opens 180°
- Hardware: Lock, two keys, and door-to-backbox mounting hardware included
- Mating backbox: SBB-B4 (ordered separately)
- Weight: ~17.45 lbs
Compatibility notes
- Pair with an SBB-B4 backbox for a complete cabinet assembly.
- Window variant — choose DR-B4 (solid) if no window is required.
- Available black variant: DR-B4 (this product is the red two-chassis window door).
Order the Notifier DR-B4R from Life Safety Consultants
In addition to the DR-B4R, Life Safety Consultants stocks the SBB-B4 backbox, matching CAB-4 dress plates, and chassis hardware. As a result, the full cabinet build ships from one supplier. Furthermore, our team can confirm color and tier count against your panel order.
For more information, contact the Life Safety Consultants team at (888) 557-0558, or email us at: sales@lifesafetycom.com
Additional information
| Weight | 17.2 lbs |
|---|---|
| Dimensions | 34 × 29 × 3 in |
| Condition | New |
| Manufacturers | Notifier |
| Part Type | Replacement Part |







