NDS 3 in. Plastic Round Drainage Grate in Black 14 - The Home Depot
NDS 2 ft. Plastic Spee-D Channel Drain Grate in Gray 241-1 - The Home Depot
NDS 4 in Round Drainage Grates for Pipes and Fittings 1-1/2-in L x 4-1/2-in W x 3-in or 4-in dia Grate in the Outdoor Drainage Accessories department at Lowes.com