S&K Manufacturing Great 8 Purple Martin HouseWith the S&K Manufacturing Great 8 Purple Martin House, your Purple Martins will think they have landed at the Ritz. Each of the 8 compartments is 8 inches by 9 inches. The entrances are starling-resistant. The nesting area allows for quick drainage, keeping the nest dry. The house is lightweight and easy to maintain. It can be expanded to include multiple floors by adding additional houses.