Product details:

Levels and supports the wiring device where the box is set back from the wall surface. Extends the box up to 1-1/2. Features and Benefits - Allows the contractor to comply with 2014 NEC Article 314.20. Levels and supports the wiring device where the box is set back from the wall surface (adjusts up to a 1-1/2 box extension). 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