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BDL® (standing seam) is a panel product designed and developed for ease of installation for both sloped and vertical glazing applications. The product features a raised profile that attaches to a click which locks to adjoining panels in place for a water tight seam. BDL® is 16 mm thick and has great thermal insulation values with a U-value of 0.41 and an R-value of 2.44, high light transmission of 63% in clear and of course a 10 year warranty against yellowing. BDL® 16 mm, being made from polycarbonate has extreme impact resistance (100 times greater than glass) and is light weight.