Easy to cut to size and useful for creating rock and coral shelving, aquascaping, using as a filter bed in sumps, display racks (eg.coral frag tanks).
Being marine grade, this product will not break down in salt water or leach harmful chemicals into the water (unlike cheaper egg crate).
Each piece has a lock design around the edges allowing you to connect the pieces together by simply locking one piece to another.
Dimensions of single piece: 15 x 30cm
Hole size: 14mm x 14mm