One-gang powder-coated aluminum tile flange, 4.5'' x 3.5'' (114mm x 89mm). For use on 880S1, 880M1, 880CS1-1, and 880M1-1 Floor Boxes. NOTE: UL Listed for tile, terrazzo, and carpet floors. Brass covers and flanges are not interchangeable with aluminum or nonmetallic covers and flanges. Nonmetallic covers are interchangeable with aluminum flanges.