Fire Door Cores

The availability of NAUF wood doors will vary by manufacturer. In general, fire doors are still readily available as NAUF. There are still component manufacturers producing door components, including door cores, as NAUF. This may not be the case with every core option, but wood based particleboard, staved lumber core, structural composite lumber core and other fire resistant door cores utilized in higher fire ratings are still available as NAUF from various manufacturers. Other composite wood door components such as door crossbands, the vertical and horizontal edges etc. are also still available as NAUF, allowing most manufacturers to continue to offer a true NAUF door in most cases.