Set includes: 2 Door Slabs Steel track rail 13 ft. Hangers with wheels Wall Attachments and Spacers Floor Guide Anti-Jump pins Installation Manual Screws for hardware Doors are No Pre-drilled. Thickness of the door slab is 40 mm or 1-9/16 in. Solid core. Solid wood core made by laminated wood using. Ciplex technology. Ciplex by Sarto High-end film layer that is applied on top of the laminated wood. No formaldehyde. Environmentally friendly using only latest eco-friendly materials. Company requires use of only the safest materials. We care about our planet, the environment and you and your loved ones. Sartodoors are Ideal for use in hospitals and childcare centers. Sealing gum German company Deventer. It has a special profile that allows to protect your home from dust, makes a cozy and quiet atmosphere around every day. On another side it allows you to save 35 % more heat and save up to 20% to the bill. Sound attenuation. Door's 40 mm thick solid wood construction yields 30% noise reduction over standard doors. Construction Door is manufactured from a single piece of wood and will give several generations of normal usage with minimal care. Color: White.