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-8171 Backplate for STI-8100/8200 Series and Also Select 9600 Series
Sale price$18.90
Regular price$22.68
Not in stock - available on backorder - lead time on request
STI
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 Detector Base Backplate, Water Ingress Protection for Series 65, XP95, Orbis and Discovery Bases
Sale price$6.55
Regular price$7.86
Not in stock - available on backorder - lead time on request
Westell
Westell EPSC2-BHL12 Bulkhead Plate, 12 Ports LC/UPC
Sale price$55.45
Regular price$66.54
Not in stock - available on backorder - lead time on request
Westell
Westell EPSC2-BHC Bulkhead Plate, 24 Ports LC/APC
Sale price$89.35
Regular price$107.22
Not in stock - available on backorder - lead time on request
Siemens
Siemens REMBOX2-MP Optional Mounting Plate for REMBOX2 -REQ. to Mount UP to (4) SIM-16 or OCM-16 Mounts In REMBOX2
Sale price$107.10
Regular price$128.52
Not in stock - available on backorder - lead time on request
Siemens
Siemens ID-MP Inner Door Control Module Mounting Plate (4 Plates per Package)
Sale price$267.65
Regular price$321.18
Not in stock - available on backorder - lead time on request
Siemens
Siemens CAB-MP Mounting Plate (1 ROW) Mounts In Cabs
Sale price$95.05
Regular price$114.06
Not in stock - available on backorder - lead time on request
Edwards
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 request
Edwards
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 request
Notifier
Notifier WSS-PR-I02 Body Colour - White (Skirt) Flash - Red Lens - Red Isolator - Yes Wall Sounder VAD - Wall Mounted, Addressable Loop Powered
Sale price$121.25
Regular price$145.50
Not in stock - available on backorder - lead time on request
Notifier
Notifier DP-ADP Retrofit Adapter Plate to Mount the RLD in an ABS-2D or a CAB4 Enclosure: Replacing an LCD-160
Sale price$169.25
Regular price$203.10
Not in stock - available on backorder - lead time on request
Kidde
Kidde KI-RB4 4-Inches Detector Mounting Base
Sale price$42.55
Regular price$51.06
Not in stock - available on backorder - lead time on request
Gamewell-FCI
Gamewell-FCI SLP-RETROFIT SLP Retrofit Kit for IF602 and 7100 BSlim Cabinet
Sale price$288.75
Regular price$346.50
9 units in stock
Secutron
Secutron AUDMAX-MASTER Audio System Master Panel
Sale price$2,546.15
Regular price$3,055.38
1 unit in stock
Apollo
Apollo 29600-528 Beam Detector Surface Mounting Plate
Sale price$203.40
Regular price$244.08
Not in stock - available on backorder - lead time on request
Edwards
Edwards SIGA-DMP Detector Mounting Plate
Sale price$132.00
Regular price$158.40
Not in stock - available on backorder - lead time on request
Edwards
Edwards 280A-PL Heat Detector Accessory
Sale price$11.90
Regular price$14.28
257 units in stock
