7 Year Life These high flow suction outlets have some of the highest approved flow rates in the industry. These can be used on new construction or as replacement covers. Retrofitting into all existing Hayward® frames, they are VGB compliant and tested to ANSI/APSP-16 standards. All retaining screws included. Select Grate Size Above WG1031HF2PAK2 - 9” Square cover, inner and outer frame Dual pack, open area 23.18 sq. in. 1.5 FT/sec. flow rate: 112 gpm Wall flow: 224 gpm, floor flow: 264 gpm WG1032HF2PAK2 - 12” Square cover, inner and outer frame Dual pack, open area 41.07 sq. in. 1.5 FT/sec. flow rate: 192 gpm Wall flow: 308 gpm, floor flow: 515 gpm WG1033HF2PAK2 - 18” Square cover, inner and outer frame Dual pack, open area 92.72 sq. in. 1.5 FT/sec. flow rate: 580 gpm Wall flow: 732 gpm, floor flow: 812 gpm