Nonmetallic slide holder assembly. Available in gray (GY), black (BK), ivory (VY), aluminum colored (AL) and brass colored (BS). NOTE: Assembled with scrub water gasket. For use on tile or carpet floors. AV3 Series Poke-Thru Devices require a 4 (102mm) diameter hole. Not designed to work with bare concrete or terrazzo. Floor covering thickness 1/8 minimum. Black