Frame is made from 14 gauge, 1.66" OD Allied Gatorshield structural steel tubing and sits on your wood base. White cover, side curtains and end panels are made from our long lasting, exclusive 12.5oz, 24mil, rip-stop polyethylene fabric that comes with a 15 yr warranty. Added ventilation with our unique easy roll up curtains, ensure more egg production and healthier birds. Double zippered roll-up door on rear panel. The 36"W x 80"H aluminum framed entry door is made from 6mm corrugated plastic. To provide secure and stable holding power, Model B354301 recommended.