The SD4H6 Panduct Slotted PVC Divider Wall is constructed out of a general-purpose lead-free material for indoor applications. It has a UL 94 flame class of V-0 with a UL recognized continuous-use temperature up to 122°F (50°C). Lead-free PVC. Compatible Duct Height 4" (100 mm). 3.53" x 0.75" x 6' length (89.6 mm x 19 mm x 1.8 m). Color Light Gray. 6 per package.