Trouble-Free biological filters with flat-plate design. Filter plate has more open space which allows for better water circulation. Filter plates are made of a semi-flexible, break resistant plastic. This under gravel filter uses the same uplift assembly as Lee's® Original Under Gravel Filters. Most economical of Lee's® three under gravel filters styles, yet includes fish-saver elbow, Slim Discard-A-Stone, and Original Carbon Cartridge. Available in rectangular shape only. All sizes are of single-plate design except for the 40/55 gallon (13030) which has 2 plates.
Size: 10" x 20"