Kent Marine Bio Slab-Silencer Slab 9 x 9 x 1. Two Pack

Kent Marine Bio Slab-Silencer Slab 9 x 9 x 1. Two Pack

Kent Marine Bio Slab-Silencer Slab 9 x 9 x 1. Two Pack. All dimensions in inches. One cubic foot contains 86,400 square feet of surface area.