Tetra In-Pond Skimmer helps eliminate debris from the water surface and prevent the pump from clogging. It features 4 corner pockets to insert gravel or sand and avoid moving or floating, a hose adapter, 1 1/4" male thread pump intake adapter, floating weir door to maximum cleaning, basket and filter pad to collect debris and particles and 3' tubing with 1 1/4" ID. The In-Pond Skimmer is simple to install and clean. Ideal for ponds up to 1000 gallons and best used with pumps 550 - 1900 gph. Comes with a 2 year manufacturer limited warranty. Measures 11 1/4" x 12" x 9 1/2" with a 9" bottom diameter.