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
Washing Machine Drain Pipe Attachment
PVC Outdoor Roof Balcony Floor Drain Cover Large Displacemen Anti-blocking Courtyard Drainage Rain Pipe Cap Water Pipe Fittings - AliExpress
NDS 11, 4 in. Round Grate Cover Connects to 4 Inch Drain Pipes & Fittings, for Small Lawns, Landscaping and Patios, Black Plastic - Drain Catches - Amazon.com