Orbit 4AR2G-58 1-Gang 5/8" Adjustable Ring For 4S Boxes - 25 Pack Color Automatic pop up power grommet

Automatic pop up power grommet made of Refined Hardened Scratch-Resistant PVC Plastic

Here's the clever part: they use Thermal Magnetic technology to sense when there's too much electricity flowing (more than 70 amps) or if there's a short circuit

Siemens Description: P1 250A 3PH PB ASC INTERIOR 30CIR AL BUS 30 CIRCUIT 3 PH4W AL

Manufacturer Zinsco Condition Refurbished

Orbit 4AR2G-58 1-Gang 5/8" Adjustable Ring For 4S Boxes - 25 Pack Color Automatic pop up power grommetDescription 2 Gang Adjustable ring for 4S Boxes Features Ensure flush installations with finished walls for 4" Square Boxes 5 8" to 1 1 2" Adjustablility Range Adjustable on the job site to adapt to different wall depths Can be pre adjusted before arriving to the field for a quicker installation Adjusts to achieve a flush finish every time Patented design provides strong electrical and mechanical connections to meet UL requirements Captive screw