Fitting Type: N/A Material: PVC Assembled Product Length: 4" Assembled Product Height: N/A Assembled Product Width: 4" . This strong yet simple grate is the most basic floor grain available Injection moulding in acid and solvent resistant white polyethelene, it fits snugly into plastic sockets or couplings It's a quick, economical alternative Fits 4" - 100mm DWV Coupling