HATCHES WITH REMOVABLE LID. Storage hatches made from UV stabilised ABS plastic with neoprene lid seal giving splash proof finish in vertical installations. Simply turn twist lock recessed handle to open and remove hatch lid to allow full access through port. Pre drilled 5mm (3/16) countersunk holes includes blank off buttons to cover screws.,Size : 356mm x 310mm O.D.,Cut Out: 303mm x 254mm.