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GUC325 HOUSING,3 1/4IN NEW CONST,GU10 Designed for open (yet-to-be-drywalled) ceilings these housings incorporate a plate and hanger bars so the housing can be positioned in the desired location. New construction type housings combine a remodel style housing with a frame-in plate. PRODUCTS DETAILS No.: GUC325 Length: 12.125″ Width: 24″ Diameter: 3.5″ Height: 4.5″