Set of 4 purple martin houses, each made of plastic Each crescent shaped entry hole discourages starlings from roosting White bodies with green roofs add a bold look Homes can be modified to create one large shelter Each has 12 interior compartments to house several martin families Included components: Bird Houses Age range description: Adult Provide your martin colony plenty of room to expand by adding these 4 S&K Purple Martin Houses to your yard. This package contains 4 separate, plastic martin houses, each with 12 compartments to encourage several nesting pairs to inhabit the area. These lasting shelters are made with martins’ needs in mind, and include slip resistant floors, ventilated door panels, and crescent shaped, starling resistant entry holes. Each home snaps together for straightforward assembly, and the interior dividers can also be altered to offer 6 larger compartments instead of 12 smaller ones. For more versatility, combine shelters together using the custom template to create dual, 24 room options. A triangular opening in the center of each home accommodates an S&K Telescoping Aluminum Tri-Pole (not included), adding both stability and height to the nest boxes. Their white door panels swing upward for nest checks while providing heat resistance and ventilation, and the tan sides and green roof enhance your garden. The all plastic construction of the homes snaps together with unique, included hardware, and railings in front of each entry provide perching spots for your feathered friends. Add versatile and lasting shelter to many nesting martin pairs with these Purple Martin Houses. Assembly required. Made in the USA. This package contains 4 of the S&K Purple Martin Houses, 12 Rooms each. Openings: 3"L x 1.125"H Apartment Size: 6"L x 6"W x 6"H each Dimensions: 21"L x 20"W x 21"H each Mounting: pole mount Construction: plastic