UV stabilized deck plates feature a locking system that prevents over tightening, jamming and cross threading. Easy to open and close. A specially engineered lubricated gasket is used in conjunction with a knife edge for a leak tested seal. Injection molded ABS/polycarbonate. Note: Avoid contact with acetone or strong solvents. A 5 1/2" B 6-3/4" C 5-3/8" D 6-1/8" Finish Smooth Color Black