Large Landscape Boulder (Brown) 56" x 42" x 30" high Insert Fittings change the external air filter(s)

change the external air filter(s) at least once every 6 months of operation

They can also be used in waterfalls and ponds

6 pounds per acre-foot of water

do not stop filtration

non toxic formula

Large Landscape Boulder (Brown) 56" x 42" x 30" high Insert Fittings change the external air filter(s)Photo shows brown color. These RealRock Boulders are ideal for concealing air pumps, water pumps, pond filters, UVs, lighting transformers and other equipment around the pond or yard. Commercial grade construction stands up to the elements Color and texture is part of material, not painted on Lightweight, easy to move and very durable Will not fade or crack Made of recycled material All rocks come standard with one screened vent, additional 3" vents