Box Cover- 4" Square- With 3 1/2" Round Opening- Zinc Plated

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Raco 8756 Box Cover, 5/8 in L, 4 in W, Square, 1-Gang, Steel, Gray, Pre-Coated Zinc PRODUCT OVERVIEW 4 in square to round raised device rings are used to mount light fixtures in walls and ceilings. Rings convert a 4 in square box to a 3-1/2 in round opening with #8-32 threaded mounting tabs for lighting retrofit applications.

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