4" x 1-1/2" Deep Square Box Extension Ring w/ 1/2" Knockouts

4-11/16 In. Pre-Galvanized Steel Square Box Extension Ring (731711234-25R)

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4-11/16 In. 2-Gang New Work Square Metal Electrical Box Extension Ring (73151 1/

RANDL N-54012 LOW VOLTAGE DEVICE BOX EXTENSION RING, 1/2" RAISE, 5" SQUARE TO 4"

RANDL N-54114 LV DEVICE BOX EXTENSION RING, 1-1/4" RAISE, 5" SQUARE TO 4"

RACO 203, Electrical Box Extension Ring, 4" Square, Drawn, 1-1/2" Deep, 1 PC

4-11/16" Square Welded Electrical Extension Box Ring 2-1/8 Deep KO's~Raco 262