1 clear plastic mesh sheet net - 1/4" x 1/4" opening - high light transmission for coral reef growth Plastic mesh screen netting material for aquarium screen top cover lid, divider and separator Alternative to aquarium egg crate - prevent jumpers from getting hurt from the sharp crate edges Build plastic netting aquarium cover for 5, 10, 20, 24, 30, 40, 55, 75 Gallon long breeder tanks Polypropylene plastic nettting compatible with Prime-line replacement window screen frame kit