The flat, hinged roof is covered with composite shingles and can be propped open using two locking arms for additional ventilation, as well as easy cleaning. The adjustable, extra-high plastic-tipped feet allow you to level the house on uneven ground and also provide extra circulation underneath. This will help keep the floor cool in the summer and warm/dry in the winter. TRIXIE has also provided a removable floor for easy cleaning, a unique feature not found in many other dog houses. This shelter is suitable for large/XL breed dogs weighing up to 95 lbs. (ex: Golden Retriever). Compatible with TRIXIE's plastic dog door (Item # 39573) which is sold separately. Quick and easy assembly. One year warranty. Dimensions (inches): 46 in. x 31 in. x 32 in., door opening 13 in. x 20 in., Weight: 52 lbs.