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.
Edwards
Edwards GRSW-10 Genesis Room Side Wiring Plate, 10-Pack
Sale price$63.80
Regular price$76.56
17 units in stock
System Sensor
System Sensor MP120KL 120VAC Adapter Mounting Plate
Sale price$33.90
Regular price$40.68
115 units in stock
Kidde
Kidde WG4RTS Surface Skirt for Genesis WG4
Sale price$13.60
Regular price$16.32
112 units in stock
Simplex
Simplex 49MP-SVWR Mounting Plate Red
Sale price$9.75
Regular price$11.70
300+ units in stock
System Sensor
System Sensor MP120K 120 VAC Adapter Mounting Plate
Sale price$36.80
Regular price$44.16
Not in stock - available on backorder - lead time on request
Gamewell-FCI
Gamewell-FCI E3-ILI-CPLATE Loop Module Mounting Plate
Sale price$129.70
Regular price$155.64
Not in stock - available on backorder - lead time on request
Gamewell-FCI
Gamewell-FCI E3-INCC-D-PLATE Command Center Module Mounting Plate, D Size
Sale price$133.55
Regular price$160.26
42 units in stock
Simplex
Simplex 49MP-AVVOWW Mounting Plate Wall White
Sale price$10.20
Regular price$12.24
Not in stock - available on backorder - lead time on request
Edwards
Edwards SIGA-MP2 Signature Module Mounting Plate
Sale price$17.60
Regular price$21.12
8 units in stock
System Sensor
System Sensor SEP-SPSWL L-Series Alert Amber Lens
Sale price$94.00
Regular price$112.80
4 units in stock
Notifier
Notifier CHS-ADP Adapter Plate for Mounting a CAB-4 Series Chassis in a CAB-5 Series Backbox
Sale price$54.65
Regular price$65.58
Not in stock - available on backorder - lead time on request
Simplex
Simplex 49MP-AVVOWR Red Wall Mounting Plate for TrueAlert ES
Sale price$10.55
Regular price$12.66
9 units in stock
Simplex
Simplex 4090-9813 Adapter Plate to Fit Square Electrical Box
Sale price$18.65
Regular price$22.38
11 units in stock
Edwards
Edwards 3-LRMF Blank Local Rail Module Filler Plate, EST3
Sale price$29.90
Regular price$35.88
46 units in stock
Macurco
Macurco CM-E1-IAK 2-Gang to Single Gang Adapter Plate Kit
Sale price$17.25
Regular price$20.70
Not in stock - available on backorder - lead time on request
Gamewell-FCI
Gamewell-FCI E3BB-RB B Size Enclosure, Red Door, Wili Mounting Plate
Sale price$382.95
Regular price$459.54
3 units in stock
Gamewell-FCI
Gamewell-FCI E3-INX-DPLATE D Size Transponder Module Mounting Plate
Sale price$141.50
Regular price$169.80
3 units in stock
Simplex
Simplex 49MP-SOWR Mounting Plate, Red
Sale price$7.95
Regular price$9.54
Not in stock - available on backorder - lead time on request
Notifier
Notifier CHS-RL-MP Mounting Plate for HS-NCM
Sale price$68.95
Regular price$82.74
16 units in stock
Edwards
Edwards SIGA-TS Trim Skirt Ring - For Octagon Electric Box
Sale price$3.70
Regular price$4.44
1 unit in stock
System Sensor
System Sensor A77-AB2 I3 Mounting Flangehalo
Sale price$8.60
Regular price$10.32
Not in stock - available on backorder - lead time on request
Kidde
Kidde WG4WTS Surface Skirt for Genesis WG4 Outdoor Appliances, White
Sale price$15.65
55 units in stock
STI
STI STI-MBP1010 14 Gauge Backplate
Sale price$15.75
Regular price$18.90
Not in stock - available on backorder - lead time on request