Doors are no pre-drilled! Thickness of door leaf - 1 3/5"Set includes: - SLAB; - casings; - track; - frames; - door hangers; - pocket door guide; - door bumper; - pulls; - adjustment wrench; - hardware mounting screws; SOLID CORESolid wood core made by laminated wood using Ciplex technology.CIPLEX by SARTOHigh-end film layer that is applied on top of the laminated wood Made in Italy.NO FORMALDEHYDEEnvironmentally friendly using only latest eco-friendly materials. Company requirements the safest materials. We take care about your family. Sarto Doors are recommended for Applying in hospitals, childcare centers and networks catering.SEALING GUM GERMAN COMPANY DEVENTERIt 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 ATTENUATIONDoor''s 40mm thick solid composite wood construction yields 30% noise reduction over standard doors.CONSTRUCTIONDoor is manufactured from a single piece of composite wood and will give several generations of normal usage with minimal care.We Could manufacture the custom doors for you. Many sizes, finishing and types of hardware. Please contact us if you have any questions!