New Age Pet ecoFLEX Fontana Chicken Barn, Jumbo Interior barn dimensions 41.1 in. L x 36.8 in. W x 29.1 in. H. Hatch box dimensions: 38.4 in. L x 23.6 in. W x 16.5 in. H Interior hatch box dimensions: 36.2 in. L x 19.7 in. W x 15.4 in. H 10 yr. Manufacturer's Warranty! Note: Ventilation space is provided in the rear of the product