Strong .394" thick, bi-parting, ALECO Heavy-Duty Magna PVC ImpacDors stand up to the rigors of constant use. Opaque gray bottom impact area is fused to a Clear-Flex II® upper section for easy viewing of oncoming traffic. Use as an effective barrier to control temperature, noise and contaminants. Full length galvanized frame has 85% floor support, needing no special jamb reinforcements, and adjustable torsion spring that assures easy opening and automatic closing. Easy to install in existing door frame. Can be field modified, order next larger size. Anchoring fasteners not included.