Blue Thumb PB1083 22 in. Elite Waterfall Box

Blue Thumb Elite Waterfall Boxes Strong, Durable Waterfall Filters The octagonal design provides maximum strength, and a much easier shape to camouflage than circular or rectangle designs. With 2 bulkhead openings, pipes can be installed from either side. The second opening can be used as a back flush to perform water changes or connect multiple pumps or plumbing lines. These boxes come with self-tapping stainless steel screws for easy installation and corrosion resistance. The waterfall snout is reversible. Install in the usual way for basic installation or reverse the snout for a more advanced waterfall appearance.