The Angelo Décor Pond Building Series® 16-inch Waterfall Filter Weir is a simple DIY solution for creating a stunning waterfall or spillway. Perfect for both new and existing ponds, it features a reversible 1″ / 1.5″ input for easy installation. The front bracket secures the Weir to the liner, ensuring a smooth flow into your pond or stream. Made from durable, injection-molded plastic, it can be discreetly hidden with rocks or plants while remaining easy to maintain. This Weir delivers a beautiful 16-inch waterfall or a more natural stream effect and provides 5-stage mechanical and biological filtration to improve water quality and support beneficial bacteria. Ideal for pumps ranging from 750 to 3000 GPH.