Vertex Aquaistik has always been known for its great style in addition to high performance. Their Acrilico-line of filter sock mounts are no exception. Made of polished, seamless acrylic with titanium screws that hold up in the saltwater aquarium environment. Holds a ring-top 10 cm (4') diameter filter sock in style on your sump... Clear, seamless acrylic mount Grad II Titanium screws Adjustable to a sump lip size of 23mm (~0.9') Dimensions: ~16,4 x 13,4 x 11,4 cm ( ~6.5' x 5.31' x 4.52')