The present disclosure provides a non-powered open/close fireproof shutter including a shutter, a shutter track which is disposed in a horizontal direction and guides both end portions of the shutter in a width direction, a coil box in which a winding shaft for winding the shutter is installed to store the shutter in a coil form, a winding motor which rotates the winding shaft, and a weight which is connected to the shutter and deploys the shutter stored in the coil box along the shutter track. The non-powered open/close fireproof shutter according to the present disclosure can significantly reduce initial facility investment and maintenance costs, prevents malfunction of the fireproof shutter, which may occur when power is lost due to a loss of an emergency power source, in advance, and can secure reliability of a fire blocking function.

A retractable dual screen system provides auxiliary environmental protection for garage door openings. An upper housing is mounted on an exterior of a garage door, including two rollers and is accessible for maintenance or repair by a removable cover. A first roller is a vinyl insect screening, and a second roller contains polyolefin material to provide an additional layer of insulation to help reduce heat loss and gain through the garage door. The second roller also provides a vapor barrier to help protect the garage door against high winds. A dual track system selectively allows both rollers to be independently deployed over the garage door opening.

A system for heating a door guide area includes: a first and second conduit for channeling a flow of heated air; a heater fluidly connected to the first conduit and configured to provide air to the first and second conduits; first and second openings providing fluid communication between the first and second conduits to allow the air to circulate through the first and second conduits; a heat transfer wall part of the second conduit, to transfer heat from the flow of heated air in the second direction to a space outside of the second conduit that is defined, in part, by the heat transfer wall; and two side supports connected to the heat transfer wall, the side supports located opposing each other and dimensioned and located along with the heat transfer wall to form three sides to encompass a portion of a roll-up door.

An assembly of a box includes an outer wall defining an inner space and a mounting frame provided outside the box and defining an undercut section. A mounting mechanism is provided in the inner space, configured to fix the box on the mounting frame. The mounting mechanism has a clamp extending through an opening in the outer wall configured to engage with the undercut portion of the mounting frame. A lever coupled to the clamp by a hinge allows operation of the clamp between a clamping position and a non-clamping position. The lever is accessible from outside the box.

The present invention relates to roll-up wall and acoustic barrier system (608) which may include an elongated member (300, 670). The elongated member may include a front wall (302), a rear wall (303) spaced from the front wall, a bottom wall (304), a first top wall (326a) adjacent the front wall, a second top wall (326b) adjacent the rear wall, and a channel (86) between the first top wall and the second top wall. The channel may comprise a first side wall (86a), a second side wall (86b), a first ledge (86c), and a second ledge (86d). The first and second ledges may define a slot (88) between the first side wall and the second side wall. The elongated member may further comprise a conduit (466) disposed between the front wall (302) and the rear wall (303) that is connected to the channel via the slot.

A slat assembly may include a slat having a first and second receiving portion. The first and second receiving portions being a pair of bent portions forming an acute angle. The slat assembly may further include an insulation layer lined on the slat. The slat assembly may further include a retaining mechanism disposed on the insulation layer to press a first portion of the insulation layer into the first receiving portion of the slat and to press a second portion of the insulation layer into the second receiving portion of the slat such that the retaining mechanism may cooperate with the first and second receiving portions to hold the insulation layer between the retaining mechanism and the slat without puncturing or penetrating the insulation layer with fasteners. A roller shutter including the slat assembly. A method of manufacturing a slat assembly and a method of manufacturing a roller shutter.

The invention is a track system for a retractable wall. The track system includes rigid outer guide tracks and flexible inner track inserts that are connected to the guide tracks by means of flanges located on both. The flexible inserts include a channel that engages with a side edge of a retractable wall, holding the wall in place. The flexible nature of the track inserts allows the inserts to bend, which in turn allows the retractable wall to flex when force is exerted on the retractable wall without breaking the tracks or tearing the wall. When excessive force is applied, the channel of the flexible insert, the walls of which are thicker than the rest of the flexible insert, bend open, so that the side edge of the retractable wall disengages from the channel by means of an opening in the channel.

A maintenance-free rolling door vacuum slat includes an elongate tubular member forming a cavity with a substantially uniform cross-sectional configuration along its length and forming first and second opposing ends conforming to the cross-sectional configuration. A first cap seals the first end. A second cap seals the second end, a vacuum being formed within the cavity. The first and second caps are joined to the elongate member to form a hermetic seals to render the slat airtight forming a permanent vacuum insulation barrier that requires no maintenance to restore the vacuum within the cavity.

A system for heating a door guide area includes: a first and second conduit for channeling a flow of heated air; a heater fluidly connected to the first conduit and configured to provide air to the first and second conduits; first and second openings providing fluid communication between the first and second conduits to allow the air to circulate through the first and second conduits; a heat transfer wall part of the second conduit, to transfer heat from the flow of heated air in the second direction to a space outside of the second conduit that is defined, in part, by the heat transfer wall; and two side supports connected to the heat transfer wall, the side supports located opposing each other and dimensioned and located along with the heat transfer wall to form three sides to encompass a portion of a roll-up door.

The invention relates to an enclosure for refrigerating chambers, suitable for closing an access (3) to a refrigerating chamber and comprising: a sliding refrigerating door (1), and a quick-opening door (2), both assembled on the same side of the chamber, comprising a frame with vertical posts (4), comprising: on an outer face, at least one mouth (42) wherein a fan (6) is coupled which introduces air in the corresponding vertical post (4); on the inside thereof, a deflector plate (61) which directs the air towards electrical resistors (7) for heating the air, situated underneath the deflector plate and, on an inner face, an outlet (43) for supplying hot air on one of the surfaces, inner or outer, of the flexible sheet (21) exposed to the cold of the chamber and removing frost from said flexible sheet (21).