Shaw Matrix with Advance Flex Technology Sea Salt Hickory 6 mil x 6 in W x 48 in L Waterproof Interlocking Luxury Vinyl Plank Flooring Clamps vises Grout Matching Colors: Movement zone available The rustproof injection molded Grout Matching Colors: Movement zone available in multiple colors to coordinate with grout 5 in Faced Unfaced Unfaced Fits 2 x 4 Walls No Fits 2 x 6 Walls Yes For Use in Walls Yes For Use in Basements Yes For Use in Attics No For Use in Ceilings No For Use in Floors No For Use in Crawlspaces No For Use in Doors No For Use in Duct No For Use in Electrical No For Use in Garage Doors No For Use in Masonry No For Use in Plumbing No For Use in Vents No For Use in Windows No Formaldehyde Free Yes Framing Type Steel studs Insulation Type Fiberglass Maximum R Value R 19 R Value per Inch 2 Its easy DIY click installation allows for a seamless transition over existing hard surface floors with no need for subfloor preparation or adhesives