An attic door support and trimming system includes a plurality of frame sections each having a base wall with an inner edge, an outer edge, a top side and a bottom side, a first end and a second end. A vertical wall extends upwardly from the base wall and is spaced from the inner and outer edges. The first and second ends of different frame sections are positionable against each other to form a rectangular shaped frame. The frame sections each are telescopic to allow a size of the rectangular shaped frame to be adjusted. The top side of the first flange is abuttable against the ceiling adjacent to the opening and the top of the second flange supports a cover when the cover is placed in a closed position closing the opening.

An attic door support and trimming system includes a plurality of frame sections each having a base wall with an inner edge, an outer edge, a top side and a bottom side, a first end and a second end. A vertical wall extends upwardly from the base wall and is spaced from the inner and outer edges. The first and second ends of different frame sections are positionable against each other to form a rectangular shaped frame. The frame sections each are telescopic to allow a size of the rectangular shaped frame to be adjusted. The top side of the first flange is abuttable against the ceiling adjacent to the opening and the top of the second flange supports a cover when the cover is placed in a closed position closing the opening.

Corner joints and methods of forming corner joints are described herein. The corner joints may provide the appearance of a mortise and tenon joint on both the exterior and interior surfaces of the corner joint, but include a mitered connection within the joint. Structures including at least one of the corner joints are also described.

A method of connecting hollow elongate members 12 which may be window frame members. The method comprising locating a plastics material insert 16 extending outwardly for a short distance from each hollow member 12, heating the inserts, and bringing the hollow members together such that the heated inserts 16 fuse together to connect the hollow members 12.

A mitred corner of a frame has a clamp 1 clamping together a top member 2 and a side member 3. The corner is at a corner of a glass panel 4 accommodated within a frame made up of four such members, each clamped together by similar clamps. The frame members are mitred at 45° with faces 8. Webs 7 of the frame members are drilled with bores 9 fixing screws 10 The screws engage in two clamp elements are used at each corner, in the form of stainless steel blocks 12,13. The block 12 has at its end close to the mitre faces 8, a 45° surface 17 and a threaded end bore 19 is provided. The block 13 has a finger 24 extending past the face 8. The finger has a clearance screw bore 25 and at its distal end a snib 26 directed towards the block 12.

Provided is a frame forming structure for use with a frame and a sash of an aluminium-wood combined door/window. The door/window may include at least a door/window frame or a door/window sash frame. The door/window frame or the door/window sash frame is formed by two connecting adjacent profile frame strips by means of an angle forming device and a round tenon rod on adjacent connecting end surfaces. Symmetric U-shaped notches for positioning the angle forming device and symmetric round tenon rod holes are processed on the connecting end surfaces of the two adjacent profile frame strips. A round tenon is used for positioning and inserted into the symmetric round tenon rod holes. A assembly-type the angle forming device is fixed the two adjacent profile frame strips. The disclosure has characteristics of increasing connecting strength of an angle portion and sealing performance after angle formation, improving convenience of frame formation.

Provided is a frame forming structure for use with a frame and a sash of an aluminium-wood combined door/window. The door/window may include at least a door/window frame or a door/window sash frame. The door/window frame or the door/window sash frame is formed by two connecting adjacent profile frame strips by means of an angle forming device and a round tenon rod on adjacent connecting end surfaces. Symmetric U-shaped notches for positioning the angle forming device and symmetric round tenon rod holes are processed on the connecting end surfaces of the two adjacent profile frame strips. A round tenon rod is used for positioning and inserted into the symmetric round tenon rod holes. A assembly-type the angle forming device is fixed the two adjacent profile frame strips. The disclosure has characteristics of increasing connecting strength of an angle portion and sealing performance after angle formation, improving convenience of frame formation.

A mitred corner of a frame has a clamp 1 clamping together a top member 2 and a side member 3. The corner is at a corner of a glass panel 4 accommodated within a frame made up of four such members, each clamped together by similar clamps. The frame members are mitred at 45 with faces 8. Webs 7 of the frame members are drilled with bores 9 fixing screws 10 The screws engage in two clamp elements are used at each corner, in the form of stainless steel blocks 12,13.

The block 12 has at its end close to the mitre faces 8, a 45 surface 17 and a threaded end bore 19 is provided. The block 13 has a finger 24 extending past the face 8. The finger has a clearance screw bore 25 and at its distal end a snib 26 directed towards the block 12.

A corner key for a fenestration trim assembly includes a sloped bearing surface configured to bias a first lineal toward a second lineal about the longitudinal axis of the second lineal.

A corner key includes a heel and at least one leg extending along an axis from the heel. The at least one leg includes a retention element and a lifting cam such that upon insertion into a frame member the lifting cam induces a bending stress in the retention element.