Florida Code Compliant Main Drain Outlet Covers

Florida Building Code 2020 454.1.6.5.10 Main drain outlets.
All pools shall be provided with an outlet at the deepest point.

Florida Building Code 2020 454.1.6.5.10.2
Outlets shall be covered by a secured grating which requires the use of a tool to remove and whose open area is such that the maximum velocity of water passing through the openings does not exceed 11/2 feet per second (457 mm/s) at 100 percent of the design recirculation flow. Main drain covers/grates shall comply with the requirements of ANSI/APSP 16 and the water velocity of this section.

https://www.floridahealth.gov/environmental-health/swimming-pools/_documents/approved.pdf