Lawson SuperFlow Large Area Drain Grate, 18" x 36"

Large area SuperFlow main drain grates begin at 18" × 36" and larger in 18" increments. SuperFlow capacity starting at 2080 GPM is unmatched. Install end-to-end to accommodate higher flow rates; no additional support required. Custom framing available to fit any length.

Features include:

• Tested to ANSI/ASME 112.19.8.2017 per section 1404 of the Virginia Graeme Baker Pool and Spa Safety Act
• A raised, cross-ridged profile for non-slip surface and to allow water penetration if blocked
• PVC material
• For multiple drain use
• Wall or floor installation
• Ten-year warranty
• Contact us for specifications and pricing of other lengths.

Flow:

• 18" × 36" – 2080 GPM Floor, 1496 GPM Wall; 343.44 sq. in. open area
• 18" × 54" – 3120 GPM Floor; 514.66 sq. in. open area
• 18" × 72" – 4160 GPM Floor, 686.88 sq. in. open area

Manufacturer recommeds cover replacement after 10 installed years.