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YourDirectCurrent.com offers Multi-Gang Box Extension Rings/Collars from 2-10 gang & 1-5/8” or 2-1/2” deep. Length: 6-13/16” Number of Gangs: 2 Cubic Inch Capacity: 71 Knockouts Sides: (8) Knockouts Ends: (4) Depth: 2-1/2" From $36.83 4 Gang Multi-Gang Box Extension Ring 2-1/2” Deep 1/2” & 3/4” Concentric Knockouts 4 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. YourDirectCurrent.com offers Multi-Gang Box Extension Rings/Collars from 2-10 gang & 1-5/8” or 2-1/2” deep. Length: 10-7/16” Number of Gangs: 4 Cubic Inch Capacity: 11.8 Knockouts Sides: (12) Knockouts Ends: (4) Depth: 2-1/2" From $41.21 2 Gang Multi-Gang Box Extension Ring 2-1/2” Deep 3/4” & 1” KO’s 2 Gang Multi-Gang Box Extension Ring 2-1/2” Deep 3/4” & 1” KO’s, also know as an extension collar, is designed for increasing the cubic inch capacity of a pre-selected Multi-Gang Box. YourDirectCurrent.com offers Multi-Gang Box Extension Rings/Collars from 2-10 gang & 1-5/8” or 2-1/2” deep. Length: 6-13/16” Number of Gangs: 2 Cubic Inch Capacity: 71 Knockouts Sides: (8) Knockouts Ends: (4) Depth: 2-1/2" From $42.66 3 Gang Multi-Gang Box Extension Ring 2-1/2” Deep 1/2” & 3/4” Concentric Knockouts 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. YourDirectCurrent.com 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" From $47.53 3 Gang Multi-Gang Box Extension Ring 2-1/2” Deep 3/4” & 1” KO’s 3 Gang Multi-Gang Box Extension Ring 2-1/2” Deep 3/4” & 1” KO’s, also know as an extension collar, is designed for increasing the cubic inch capacity of a pre-selected Multi-Gang Box. YourDirectCurrent.com 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: C.I. Knockouts Sides: (10) Knockouts Ends: (4) Depth: 2-1/2" From $52.41 4 Gang Multi-Gang Box Extension Ring 2-1/2” Deep 3/4” & 1” KO’s 4 Gang Multi-Gang Box Extension Ring 2-1/2” Deep 3/4” & 1” KO’s, also know as an extension collar, is designed for increasing the cubic inch capacity of a pre-selected Multi-Gang Box. YourDirectCurrent.com offers Multi-Gang Box Extension Rings/Collars from 2-10 gang & 1-5/8” or 2-1/2” deep. Length: 10-7/16” Number of Gangs: 4 Cubic Inch Capacity: 111.8 Knockouts Sides: (12) Knockouts Ends: (4) Depth: 2-1/2" From $60.65 5 Gang Multi-Gang Box Extension Ring 2-1/2” Deep 1/2” & 3/4” Concentric Knockouts 5 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. YourDirectCurrent.com offers Multi-Gang Box Extension Rings/Collars from 2-10 gang & 1-5/8” or 2-1/2” deep. Length: 12-1/4” Number of Gangs: 5 Cubic Inch Capacity: 128.7 Knockouts Sides: (14) Knockouts Ends: (4) Depth: 2-1/2" From $78.26   PAGES:  1 | 2 | 3  16 Style(s) Available    View/Edit Order | Checkout   Enter your Priority Code for special savings   Provide your zipcode for real-time freight cost