Notifier SBB-D4R — CAB-4 Series backbox assembly, four tiers, red, for ONYX Series fire alarm control panels.
Notifier cabinets are ordered as pieces, not as a finished cabinet: one SBB backbox, one DR or ADDR door, and a BP2-4 battery plate where batteries or a power supply occupy the lower position. SBB-D4R is the largest of the four standard sizes, giving four chassis tiers.
- Four tiers, red, 40 lb
- Fabricated from 16-gauge steel
- Backbox 24 in. W × 45-3/4 in. H × 5-5/32 in. D
- Top knockouts 1.375 in. inner / 1.750 in. outer; four lower knockouts 0.875 in. / 1.125 in.
- CAB-4 listings: UL and ULC S635, FM approved, MEA, CSFM; seismic certified with SEISKIT-CAB
- Backbox only — door, battery plate and trim ring are separate catalog numbers
Size and color both live in the part number. SBB-D4 is the identical box in black. SBB-A4R is one tier (21 lb), SBB-B4R two tiers (26.88 lb) and SBB-C4R three tiers (32.60 lb), so a D4 will not fit an opening cut for an A4 or B4. The matching semi-flush trim ring is TR-D4, and trim rings are black even on red cabinets.
