Single cell bat house that can hold up to 12 to 30 bats. 21-inch by 14-3/4-inch by 4-1/2-inch. Stovall products feature all cedar construction, stainless steel and dichromate plated screws, washers, hooks and chains, hand sanded, assembled with screws, many products coated with wood protector which accents the wood grain and the natural warmth of cedar. Environmentally green practices ? hand sorted down graded lumber. The Shop is heated with scrap wood, cooled with natural shade and insulation, nestled in a glen among 25+ acres of beech/maple/oak forest. Rumored staffing of woodland gnomes with a payroll of nuts and berries is still not factual.