Drain plug for shower tray hole diameter 90 mm chrome-plated ABS shell essential quick assembly reduced space requirement DIAMETER 90 MM. The drain plug mod. easily adapts to most shower trays on the market, of any material, with a drain hole of 90 mm in diameter. UNSPECTABLE. The drain basket for the shower tray has been designed to reduce the formation of bad odors thanks to a column of water inside which will limit the sedimentation of residues on the edge of the siphon. REDUCED SIZE. EASY TO CLEAN. High accessibility facilitates routine maintenance and cleaning. THIN SHOWER TRAYS. The drain can also be installed with slimline shower pans by removing the supplied inspectable basket and chrome cover.