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 door has a core that includes a first major surface having one or more first recesses, a second major surface opposite to the first major surface, and fire retardant material such as intumescent material applied to the first recesses and no more than about 20 percent by surface area of a remainder of the first major surface excluding the first recesses. A door skin includes an interior surface, an exterior surface, at least one contoured panel portion establishing a protrusion extending on the interior surface and an opposite depression extending into the exterior surface, and fire retardant material such as intumescent material applied to at least one of the protrusion or the depression and no more than about 20 percent by surface area of the remainders of the interior surface excluding the protrusion and the exterior surface excluding the depression.

A sound damping door system having a door frame, a compression seal, a door slab, a bottom seal, and a concealed hinge assembly. The door frame includes male and female components adapted to engage each other in a rough door opening between first and second wall faces; and at least one isolation gasket adapted to be disposed between the male and female components. The compression seal is mounted to the door frame. The door slab includes an outer skin; an arched constrainment sheet inside the outer skin; a damping fill material inside the outer skin; and an acoustic insert inside the outer skin. The bottom seal is mounted to a bottom surface of the door slab such that the bottom seal is permitted to move relative to the door slab.

The present application discloses a climate chamber comprising at least one housing comprising a door, with an interior volume which is closable with the at least one door, wherein the at least one door comprises an inner wall and an outer wall, wherein the inner wall is formed of a unitary and bendable base body which comprises a polygonal wall section enclosed by side regions, wherein from each of the side regions projects a tongue with its free end, wherein the tongue in a first edge is canted from the wall section into a first section to form a tray and wherein the free end of the tongue is canted back by a second edge into a second section in order to form a sealing seat into which a sealing can be set.

A door has a core that includes a first major surface having one or more first recesses, a second major surface opposite to the first major surface, and fire retardant material such as intumescent material applied to the first recesses and no more than about 20 percent by surface area of a remainder of the first major surface excluding the first recesses. A door skin includes an interior surface, an exterior surface, at least one contoured panel portion establishing a protrusion extending on the interior surface and an opposite depression extending into the exterior surface, and fire retardant material such as intumescent material applied to at least one of the protrusion or the depression and no more than about 20 percent by surface area of the remainders of the interior surface excluding the protrusion and the exterior surface excluding the depression.

An apparatus comprises a composite sandwich panel, a seal, and a hinge. The composite sandwich panel has a first edge in a first over-crush edge region, wherein a thickness of the composite sandwich panel decreases within the first over-crush edge region in a direction towards the first edge. The seal is bonded to the first over-crush edge region of the composite sandwich panel and extending past the first edge. The hinge is connected to the composite sandwich panel such that an axis of rotation of the hinge is positioned over the first over-crush edge region of the composite sandwich panel.

An illumination system is provided for an access door may include an elongated illumination housing configured to be coupled to at least one of an upstanding jamb and a corresponding jamb casing extending along the one side of the access door, an elongated light transmissive cover coupled to the illumination housing, an elongated light pipe received within the illumination housing, an illumination source housing operatively coupled to one end of the light pipe, an illumination source disposed within the illumination source housing and configured to produce and transmit visible light into the light pipe so as to be visible through the light transmissive cover, a source of electrical power, and a control unit configured to selectively apply electrical power from the source of electrical power to the illumination source to produce the visible light.

Embodiments of the disclosure are directed towards a composite stiffener that is incorporated into panelized products to create stronger bonding, greater adhesion between laminated layers and less warping sandwich panels. In addition, the resulting products incorporating composite stiffeners can be lightweight, yet stronger than other lightweight panels.

A cabinet door having a first member with a first recess disposed along a top side of the center panel between a first stile and a second stile, a second recess disposed along a bottom side of the center panel between the first stile and the second stile, and a first veneer having a longitudinally extending grain pattern; a second member with a second veneer having a longitudinally extending grain pattern, and a first rabbet; and a third member with a third veneer having a longitudinally extending grain pattern; and a second rabbet; where the second member fits into the first recess, the third member fits into the second recess, and the longitudinally extending grain pattern of the second veneer is parallel to the longitudinally extending grain pattern of the third veneer and perpendicular to the longitudinally extending grain pattern of the first veneer.

Hollow core door apparatus for preventing the build up of pressure in a room having a register through which air flows into the room and the door includes an inside door skin and an outside door skin, and the door skins includes openings through which air flows and a center panel between the skins and spaced part from the skins. The center panel has an outer perimeter greater than the inner perimeter of the openings. The center panel is spaced apart from the skins, and also from the adjacent stiles and rails. A chamber is formed about the panel and between the adjacent stiles and rails and the openings in the skins. Air flow from the room is through the opening in the inside skin into the chamber, around the outer periphery of the panel, and outwardly through the opening in the outside skin in a non-linear manner.