For maximum flexibility, 30 min tested by Chiltern Fire.
The frame profiles are supplied either mitre-cut to size, or loose for cutting and assembly on-site. They are assembled using locking mitre corner inserts, temporary corner braces and bottom spreader bar. Then the frame is inserted to one side of the opening, attached using moveable brackets. The snap-in mesh ensures no plaster cracks between wall and frame. The door is hung from concealed adjustable hinges set into full-length hardwood sections inserted on all 3 sides of the frame. Suits standard or floor-to-ceiling doors.