Ampelite Twinwall Polycarbonate Sheet 4 x 610 x 1220mm Clear SKU: 286867 MODEL: AHP610 Error. try again later You've successfully joined the club $ 27 .98 each Mitre 10 SAvailable at selected stores. Check your local store for details Variants Shatterproof 4mm twinwall polycarbonate glazing sheet. Features and benefits Easily cut, bent and shaped. Strong yet light in weight. Safer and eight times stronger that glass. Simple to handle and install. High light transmission. Waterproof.