Gold-Up Pre-stretched Aluminum Frames are feature of smooth appearance, free of deformation, Light weight, and durable in use; All of the frames are made of AL6063T5 aluminum alloy material. welded watertight, ground flat, and sandblasted for excellent adhesion, stretched with top quality high strength and low elongation monofilament polyester mesh and bonded with highest chemical resistance glue. High quality materials and advanced manufacturing processes insure optimal tension 6 Pack Pre-Stretched 20” x 24” 156 count white mesh