Levels and Supports the Wiring Device Where the Box is Set Back from the Wall Surface Extends the Box Up to 1-1/2 Inch; Works In Handy Boxes and 4 Square Electrical Boxes with Plaster Rings for Single Switches or Receptacle; Functions with All Standard Devices, Switches and GFCIS; Manufactured From 105 Deg C Continuous Use 94V0 Rated Flame Retardant Plastic for Safer Installations; Plastic Construction Prevents Stripping of Wire Insulation or Short Out on Screw of Side Wire Devices; Made in USA

Specifications:

Type: Adjustable
Height: 4.188 Inch
Width: 7.749 Inch
Depth: 1.813 Inch
Number of Gangs: 4
Material: Flame Retardant Plastic
Standard Package: 10
Approval: UL, CSA, NEC