Mounting, adapter and back plates let a device install where the existing opening does not match. The common cases are retrofit — a new appliance on an older backbox — and cosmetic, covering the footprint left by a larger device that has been replaced.
Adapter plates are specific to both sides of the problem: the device being mounted and the box or opening it is mounting to. Order by that pair rather than by dimensions alone, since mounting-hole patterns differ between manufacturers even where the plate size is the same.
STI
STI STI-1283 Backplate for STI-1210D/E & STI-1221D/E
Sale price$13.50
Regular price$16.20
Not in stock - available on backorder - lead time on requestSTI
STI STI-MBP0913 14 Gauge Backplate
Sale price$15.75
Regular price$18.90
Not in stock - available on backorder - lead time on requestSTI
STI STI-MBP1316 14 Gauge Backplate
Sale price$17.30
Regular price$20.76
Not in stock - available on backorder - lead time on requestSTI
STI STI-1286 Backplate for 9711/9714 Series (SpectrAlert Strobes)
Sale price$18.90
Regular price$22.68
Not in stock - available on backorder - lead time on request
Apollo
Apollo 45681-233APO Backplate
Sale price$6.55
Regular price$7.86
Not in stock - available on backorder - lead time on request
Resideo
Resideo AT72D1956/U Multi mounting 120 V AC Transformer with 9 in Leadwires
Sale price$56.48
Regular price$67.78
Not in stock - available on backorder - lead time on request
Aiphone
Aiphone MKW-P 1-Gang Mounting Plate
Sale price$16.15
Regular price$19.38
Not in stock - available on backorder - lead time on request
Resideo
Resideo T834L1004/U Mercury Free T834, Cool Only, Vertical Thermostat, T834L1004
Sale price$45.15
Regular price$54.18
Not in stock - available on backorder - lead time on request
Resideo
Resideo 50033847-001/U Adapter Plate for Mounting TB6575/TB8575 Series Fan Coil Thermostats
Sale price$16.80
Regular price$20.16
Not in stock - available on backorder - lead time on requestWestell
Westell EPSC2-BHS Bulkhead Plate, 12 Ports SC/UPC
Sale price$69.50
Regular price$83.40
Not in stock - available on backorder - lead time on requestWestell
Westell EPSC2-BHPT12 Bulkhead Plate, 12 Position DC Terminal
Sale price$86.90
Regular price$104.28
Not in stock - available on backorder - lead time on requestWestell
Westell EPSC2-BHL12 Bulkhead Plate, 12 Ports LC/UPC
Sale price$60.50
Regular price$72.60
Not in stock - available on backorder - lead time on requestWestell
Westell EPSC2-BHL Bulkhead Plate, 24 Ports LC/UPC
Sale price$97.45
Regular price$116.94
Not in stock - available on backorder - lead time on requestWestell
Westell EPSC2-BHC Bulkhead Plate, 24 Ports LC/APC
Sale price$97.45
Regular price$116.94
Not in stock - available on backorder - lead time on requestWestell
Westell EPSC2-BHA Bulkhead Plate, 12 Ports SC/APC
Sale price$69.50
Regular price$83.40
Not in stock - available on backorder - lead time on requestSpace Age
Space Age FE-5000-012 FFE Surface Mounting Plate
Sale price$61.50
Regular price$73.80
Not in stock - available on backorder - lead time on requestSiemens
Siemens SHMPS-R Supervised Horn Adapter Plate
Sale price$22.85
Regular price$27.42
Not in stock - available on backorder - lead time on requestSiemens
Siemens REMBOX2-MP Optional Mounting Plate for REMBOX2 -REQ. to Mount UP to (4) SIM-16 or OCM-16 Mounts In REMBOX2
Sale price$144.15
Regular price$172.98
Not in stock - available on backorder - lead time on requestSiemens
Siemens ID-MP Inner Door Control Module Mounting Plate (4 Plates per Package)
Sale price$292.75
Regular price$351.30
Not in stock - available on backorder - lead time on requestSiemens
Siemens CAB-MP Mounting Plate (1 ROW) Mounts In Cabs
Sale price$99.80
Regular price$119.76
Not in stock - available on backorder - lead time on requestNapco
Napco GEM-TRANS2HSG25 Package of 25 GEM-TRANS2 Cases, Includes Housing Top, Bottom, Mounting Plate and Magnet Housing
Sale price$73.80
Regular price$88.56
Not in stock - available on backorder - lead time on requestEdwards
Edwards SIGI-SB4 Detector Base - Standard, for 4" SQ. Box, Includes -TS4 Skirt, with Isolator
Sale price$7.75
Regular price$9.30
Not in stock - available on backorder - lead time on requestEdwards
Edwards 4-MPLT Mounting Plate Mounts in Chassis or Battery Space
Sale price$379.60
Regular price$455.52
Not in stock - available on backorder - lead time on requestSTI
STI KIT-314 Special Adapter Plate for Select 7500/1200 Models
Sale price$17.60
Regular price$21.12
Not in stock - available on backorder - lead time on request