This is an 18 x 36 inch SuperFlow PVC Frame and Flat Grate. The SuperFlow VGB-2008 certified main drain grates and covers have a super flow rate and a unique top profile design that provides extreme comfort under foot. These large area main drain frames and grates actually begin at 18 inch x 36 inch and go up in size in 18 inch increments.
The SuperFlow capacity starts at 2080 GPM; that is unmatched by the competition. Install end-to-end to accommodate higher flow rates. No additional support required. For single unblockable drains or multiple drain use.
