All sales on twinwall are FINAL. No returns or refunds will be accepted once the material ships.

*** All profiles are cut to the length of the longest sheet purchased. Custom cut lengths can be specified after ordering in the "Comments" field ***

Polygal's interconnecting polycarbonate profiles connect sheets and cover structural connections and allow the covering of large areas, especially semi-transparent roofing, without obstructing the incoming light at the connecting points.