CPR filters are designed for long term reliability and ease of operation. Easily fits under your aquarium with its compact size. Efficient drip plate or drip lid dispersal, specially designed vented lids allow for proper gas exchange, and will not warp. CR 2000 handles up to 200 gallons. Inlet 1"bulk head- Outlet 3/4" bulk head. 24" L x 12.5" W X 20" H.