This Redwood Internal Door Casing Set is designed for constructing a timber frame around an internal doorway, providing the framework needed to hang and fit an internal door. Manufactured from redwood timber, the casing has finished dimensions of 33 x 94mm, corresponding to a nominal size of 38 x 100mm. Suitable for internal joinery, renovations and new door installations, the timber can be cut and fitted to suit the required opening, subject to the dimensions of the casing set.