Polaris 2879963 Canvas Door Durable, heavy-duty 23-oz. canvas material is mold-resistant for reliable performance & UV-stable to resist fading Heavy duty powder-coated steel rod door frames provide strength & enhance fit & finish Doors install quickly & easily & can be stored easily when not in use Premium-quality paddle latches offer reliable door closure PVC windows open easily to provide ventilation & close securely using magnetic closures