standard grating styles
Channel grate: 10 GA formed grating with 3/8″ slots on 2-3/8″ centers
Open grate: 10 GA bearing bars on 1-1/2″ center and 8 GA banding bars
Solid grate: 1/2″ plate with 1/2″ perimeter drain gaps
Slotted grate: 1/2″ plate with 1/2″ perimeter drain gaps and 3/8″ slots on 2-3/8″ centers.