Disclosed herein is a multi-layered window or door system for EMP protection. This may include a frame-shaped window or door frame, a plurality of shielding materials disposed on a side of the window or door frame to be spaced apart from each other, a first bracket disposed between the plurality of shielding materials and supported by an elastic mechanism, and a second bracket disposed outside an outermost shielding material among the plurality of shielding materials and supported by a cylinder.

Systems and methods for providing a drop seal assembly which is concealed within an opening in the bottom of a sliding door panel of a top-hanging sliding door. The drop seal assembly may include bottom guide which defines a downward facing elongated slot or track which receives a sill guide therein. The drop seal assembly also includes a drop down acoustic seal which automatically drops down to contact the floor surface below the door panel when the door panel is moved from an open position into a closed position. The distance that the seal drops down upon closing of the door panel may be selectively adjustable to accommodate variances in the air gap between the door bottom and the floor surface due to particular installation conditions. A concealed magnetic bottom seal activator may be used to provide self-adjusting activation of the door bottom seal assembly using two opposing magnets.

An exemplary door has a hollow interior, and includes a first panel and a second panel that are secured to one another such that a gap is formed therebetween. Each panel has an interior side that faces the hollow interior and an exterior side that is exposed to view. The door further includes a protective coating system that is disposed on the interior side of at least one of the panels. The coating is formed of a two-part elastomeric composition, such as a two-part elastomeric polyurethane composition or a two-part elastomeric polyurea composition. The coating improves the thermal, acoustic, and/or ballistic performance characteristics of the door.

An exemplary door has a hollow interior, and includes a first panel and a second panel that are secured to one another such that a gap is formed therebetween. Each panel has an interior side that faces the hollow interior and an exterior side that is exposed to view. The door further includes a protective coating system that is disposed on the interior side of at least one of the panels. The coating is formed of a two-part elastomeric composition, such as a two-part elastomeric polyurethane composition or a two-part elastomeric polyurea composition. The coating improves the thermal, acoustic, and/or ballistic performance characteristics of the door.

A glazing includes at least two glazed panels, which form a cavity between them, and at least one stack of resonators positioned in the cavity, wherein the at least one stack of resonators includes at least two resonators of different length, the resonators of the at least one stack having a longitudinal axis and being stacked along a stacking axis perpendicular to their longitudinal axis.

A core for a fire rated door includes a fire resistant center panel and an extruded fire resistant border. The fire resistant center panel has a bottom, a top, a first side, a second side, a first end and a second end. The fire resistant center panel is made of a first fire resistant material. The extruded fire resistant border is attached to the first side, the second side, the first end and the second end of the fire resistant center panel. The extruded fire resistant border is made of a second fire resistant material having a higher density than the first fire resistant material.

A core for a fire rated door includes a fire resistant center panel and an extruded fire resistant border. The fire resistant center panel has a bottom, a top, a first side, a second side, a first end and a second end. The fire resistant center panel is made of a first fire resistant material. The extruded fire resistant border is attached to the first side, the second side, the first end and the second end of the fire resistant center panel. The extruded fire resistant border is made of a second fire resistant material having a higher density than the first fire resistant material.

Disclosed is a door-and-window system, in which a handle component (121) is assembled via a transmission component (123) with a force receiving portion (12231) of a movable door-and-window assembly component (122). When the handle component (121) is operated, the force receiving portion (12231) moves along a first guide groove (12211) thanks to the force transmission effect of the transmission component (123), and at the same time a driving portion (12232) moves along a second guide groove (12221). Due to an assembly relationship between a guide member (1224) and a third guide groove (12212), a first base seat (1221) translates relative to a second base seat (1222) along a direction of the third guide groove (12212), such that a movable door-and-window (11) can abut tightly against or move away from a sealing member (24) on a door-and-window mounting profile (2). Thus, while operating a handle (1211) for locking or unlocking, sealing or unsealing is achieved between a movable door-and-window subsystem (1) and the door-and-window mounting profile (2), noise is effectively reduced, and anti-shock performance is improved as well.

Disclosed is a door-and-window system, in which a handle component (121) is assembled via a transmission component (123) with a force receiving portion (12231) of a movable door-and-window assembly component (122). When the handle component (121) is operated, the force receiving portion (12231) moves along a first guide groove (12211) thanks to the force transmission effect of the transmission component (123), and at the same time a driving portion (12232) moves along a second guide groove (12221). Due to an assembly relationship between a guide member (1224) and a third guide groove (12212), a first base seat (1221) translates relative to a second base seat (1222) along a direction of the third guide groove (12212), such that a movable door-and-window (11) can abut tightly against or move away from a sealing member (24) on a door-and-window mounting profile (2). Thus, while operating a handle (1211) for locking or unlocking, sealing or unsealing is achieved between a movable door-and-window subsystem (1) and the door-and-window mounting profile (2), noise is effectively reduced, and anti-shock performance is improved as well.

An energy efficient window includes a plate of glass having a first side and a second side opposite the first side. A polymer aerogel thermal barrier having a first side and a second side is further provided. One of the first side and the second side of the polymer aerogel thermal barrier is located on one of the first side and the second side of the plate glass.