A step up in thickness from the 5mm, the Super Liner 6mm gives you a 3sq.m roll of self-adhesive closed-cell foam that's equally at home on van panels as it is on HGV cab metalwork. Apply it directly over DEADN Hex or Duo for a clean two-layer build-up that cuts both heat transfer and residual panel noise. The 6mm sweet spot suits most side panel and door applications.