FF2BK: FF2BK -- Fire-Rated Poke-Through, Large Capacity Furniture Feed Cover/Flange, Aluminum, Black. Specifications: Complies with UL 514A requirements for scrub water protection. Floor Thickness Range: 2.25" (over metal deck) to 7" (57.2 to 117.8) UL Installation Spacing: Minimum of 2 feet on centers and not more than one unit per 65 sq. ft. of floor area in each span. Cored Hole: 3" (76.2) diameter Conduit Tubes: 0.75" E.M.T. Listings: UL Listed and CSA Certified Note: When connecting conduit sweeps to through-floor fittings, ensure compliance with NEC fill tables. Wiring Capacity: (Voice/Data only) Up to 36 Low Voltage cables at 0.21" (5.3) diameter.