Improvements relating to frame construction and installation

The linings (1, Fig 1) of a door frame are assembled into a basic frame being fitted into a wall aperture. The or each face of this frame to be flush with a wall surface has a longitudinal groove 4 to receive a rib 6 of an architrave member(s) 2 which, when fitted, overlaps the adjacent wall 12. The corners of the frame can be mutually secured by L-shaped straps (9, Fig 2) in these grooves, subsequently concealed by the architrave. The architrave can also conceal elements 14, 15 secured to and projecting outwardly of the frame which overlap the wall and are screwed or nailed through to fix the frame. The element may be a hinge (19, Fig 4) which is movable through 180 degrees. The inward looking face of the frame may also be grooved 5 to receive the ribs 8 of stops strip 3. These and the architrave(s) can be glued in place so that no fillings over nails or screws are required.