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3 Gang Multi-Gang Box Extension Ring 2-1/2 Deep 1/2 & 3/4 Concentric Knockouts, also know as an extension collar, is designed for increasing the cubic inch capacity of a pre-selected Multi-Gang Box. Electrical-Supply.net offers Multi-Gang Box Extension Rings/Collars from 2-10 gang & 1-5/8 or 2-1/2 deep.
- Length: 8-5/8
- Number of Gangs: 3
- Cubic Inch Capacity: 90.5
- Knockouts Sides: (10)
- Knockouts Ends: (4)
- Depth: 2-1/2"
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