Disclosed is a door leaf including a frame and a door panel with a front leaf, a back leaf and a filler plate. The frame includes conventional profiles with a lip oriented inwards to form a groove. The front leaf is affixed against the front of the frame, and at least partially covers the front of the frame. The door panel is fastened to the back of the frame by panel slats. The front leaf is provided with clamp that enable the front leaf to be pulled against the front of the frame, whereby these clamps are formed by one or more clamps along the periphery of the frame with a basic element that is fastened on the front leaf and a clamping slat affixed thereon that hooks behind an aforementioned lip and can be tightened on the basic element towards the front leaf.

A coupling device for coupling folding elements of a folding device has first and second coupling elements that lock the folding elements relative to each other. The coupling device has a locking device with sliding element whose rearward part, when the second folding element is not closed, is in a rest position in which a locking member of the sliding element engages a locking receptacle of the first coupling element when the coupling elements are latched. In the rest position, the locking member contacts a guiding contour of the second coupling element and unlocking of the locking member from the locking receptacle by pulling on the coupling elements is prevented. When the second folding element is closed, the rearward part of the sliding element contacts the frame causing the locking member to move along the guiding contour out of the locking receptacle; the locking action is released.

An insulating body for multi-shell construction elements for spacing apart and thermally separating at least two profiled section elements relative to each other has a base member with a first side and a second side opposite the first side. Fastening projections are arranged on the first and second sides of the base member and secure the insulating body in receptacles of the profiled section elements. At least the first side has two of the fastening projections. The base member has a hollow chamber with an inner guiding contour for receiving and guiding fitting parts. A multi-shell construction element with at least two profiled section elements is provided with at least one such insulating body.

A high-performance fenestration system that includes a pressure chamber formed between longitudinally adjacent fenestration members. The pressure chamber is positioned on one side of the thermal break. The fenestration system can be configured so to create a continuous pressure chamber around the closed perimeter of the fenestration between the frame and sash. The resulting fenestration system enjoys significantly better water penetration resistance as compared with conventional high-performance doors and windows. Because of the positioning and structural configuration of the pressure chamber, the fenestration system can be configured to accept different hinge styles including Euro-style and American-style hinges without significant loss of performance. In addition, the system can accept American-style door hardware or Euro-style door hardware.

A fire shelter including: a foundation including a slab; an internal frame mounted on the slab; external cladding formed from heat resistant masonry panels supported by the internal frame, the external cladding including wall cladding including wall panels and defining a door opening and roof cladding including roof panels; and a door mounted in the door opening, the door including a door frame hingedly connected to the internal frame adjacent to the door opening and door cladding including door panels formed from heat resistant masonry panels supported by the door frame, wherein when the door is in a closed position, the door cladding closes the door opening.

Insulation structure includes main-body assembly and side frame including frame body and thermal insulation assembly arranged in frame body. Thermal insulation assembly includes first sectional material, compensating member, and second sectional material connected in sequence. Main-body assembly is arranged on frame body. Thermal insulation assembly is arranged in length direction of frame body. First sectional material is located indoors. Second sectional material is located outdoors. Door and window insulation structure includes side frame and main body portion arranged on and slidingly connected to side frame including frame body and multiple first fixing parts arranged at intervals and all arranged on frame body. Main body portion includes main body and multiple second fixing parts arranged at intervals and all arranged on main body. One first fixing part is correspondingly inserted between two adjacent second fixing parts, and one second fixing part is correspondingly inserted between two adjacent first fixing parts.