True, full-size dimensions and volume to provide maximum growing area. Made from durable, high-impact ABS plastic with UV resistance for longevity. Low profile to fit under flood tables and other hydroponic systems. Slightly convex & ribbed cover design for strength and drainage of any water that may collect on top. Convenient access porthole (porthole cover available separately). Superior grid pattern design and multi-level drainage channels to promote fast and thorough drainage. Rounded corners for easy cleaning