New Age Pet ecoFLEX Outdoor Dog House: Bunkhouse Style The ecoFLEX Bunk House Dog House from New Age Pet is the best home possible for your pet. It's designed with your pet's health in mind; well ventilated, easy to clean, raised floors and step-in design. Also maintenance free and uses hassle-free, no-tool-required assembly. The Bunkhouse Style Dog House has an A-Frame roof, and is made from ecoFLEX material. ecoFLEX is a blend of recycled polymers and wood by-products. It exhibits the best characteristics of the polymers and wood- making it the best of both worlds. ecoFLEX Benefits: Longer life cycle: One ecoFLEX-based structure will outlast two wooden-based structures Weather Resistant: Moisture and Humidity Resistant ecoFLEX doesn't warp, twist, or crack from changes in temperature and humidity like wood does Rot-Proof and Insect-Proof Doesn't splinter, making it safer for your pet Comes in a natural color that will not oxide or turn gray over time Can customize the look: Accepts latex paint without priming. Can be stained with repeat applications of oil based stain Double-Wall Construction: the panels are constructed with inner and outer walls connected by an interior web. This makes them stronger and lighter than a similar thickness of wood Easy to Clean: Because of the unique assembly technology, gaining inside access to the structure to clean it is a 30 second process with no tools required Eco-Friendly: made from recycled materials Item Specifications: Sizing: Small: For dogs up to 20lbs Medium: For dogs up to 40lbs Large: For dogs up to 80lbs X-Large: For dogs up to 150lbs Dimensions: Small Exterior: (24.4" L x 21.7" W x 25.2" H) Interior: (18.5" L x 17.7" L x 21.3" H) Door: (9" W x 10" L) Medium: Exterior: (31.1" L x 30.7" W x 31.5" H) Interior: (25.7" L x 20.3" W x 27.6" H) Door: (11.5" W x 15.0" H) Large: Exterior: (36.1" L x 31.9" W x 36.3" H) Interior: (31.2" L x 23.4" W x 32.7" H) Door: (14.0" W x 18.0" H) X-Large: Exterior: (42.2" L x 36.3" W x 37.5" H) Interior: (37" L x 25.7" W x 33.5" H) Door: (16.0" W x 19.5" H)