A roller shutter includes a chamber with an opening, a roller curtain movable between being fully contained within the chamber and extended beyond the chamber through the opening, and at least one guide rail along and relative to which said roller curtain is movable between being retracted and extended, wherein the roller curtain includes a plurality of slat members interlocked with each other for relative pivotal movement, the plurality of slat members collectively forming first and second major surfaces, and a first layer of fire-resistant and/or heat-resistant fabric fixedly mounted to the first major surface of the slat members and a second layer of fire-resistant and/or heat-resistant fabric fixedly mounted to the second major surface of the slat members, and wherein the guide rail includes at least a first sealing member which, when the roller curtain is extended, contacts or presses into the first layer of fire-resistant and/or heat-resistant fabric.

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.

A retractable screen device for a framed opening employing a frame track fastened to each side support of the framed opening; the frame track forming a compartment for receipt of a guide rail with a decompression gasket positioned between the frame track and the guide rail. A screen mounted on a horizontally disposed rotatable shaft secured to a header of the opening has laterally opposed side edges with an elongated flexible protrusion secured along the length of each side edge. The guide rail receives and guides the screen protrusion along a longitudinal direction, and the decompression gasket allows the guide rail to traverse the frame track side walls to permit the screen to flex while maintaining a consistent tension on the screen. Vertical tension adjustment is provided by use of a biasing member coupled to the center axle that activates when the screen is deployed.

A fenestration assembly includes a sash, a frame surrounding the sash, and at least one screen assembly mounted in at least one of: the top portion and the bottom portion. The frame includes a top portion, a bottom portion, and two jambs forming first slots extending lengthwise along at least a portion of the jamb. The first slots each include a screen edge retention feature. The screen assembly includes a roller assembly substantially hidden from view, a screen material attached to the roller assembly, and a plurality of raised features. Edges of the screen material extend into the first slots. The raised features are attached to each of the edges of the screen material. The raised features are configured to engage the screen edge retention features and retain each of the edges of the screen material at least partially within the first slot of each of the two jambs.

A roll-up door including a flexible curtain having a front surface, a back surface, a first end coupled to a shaft, a second end opposite the first end, and first and second side edges extending between the first end and the second end, the flexible curtain being moveable between a retracted position wherein the flexible curtain is coiled around the shaft and a deployed position wherein the flexible curtain is uncoiled from the shaft. A first retention band is mounted along at least a portion of the first side edge of the flexible curtain, the first retention band including an inner surface at least partially facing towards the flexible curtain, an outer surface opposite the inner surface, a fixed edge attached to the flexible curtain generally parallel to the first side edge, and a free edge opposite the fixed edge and movable relative to the fixed edge.

According to some aspects, provided are curtain assemblies comprising two or more curtains selectably moveable between an open position and a closed position. Some embodiments include a track guide for at least one of the curtains having a first track and second track insert coupled to respective sides of the track guide and the curtain, wherein the curtain is moveably coupled to the first and second track inserts, and moveable along the channel of operation during transition between the open and the closed position. The curtains can be configured to define an air pocket that improved the energy efficiency of the curtain assembly (e.g., improving heat and/or noise properties). Some embodiments include a roller guide to maintain spacing between the curtains and can define a boundary of the air pocket.

A vertically sliding roll-up door has a portal structure including vertical uprights provided with guide rails for guiding the sliding of blocks fixed along the lateral edges of the curtain, to allow the curtain to move vertically with respect to the portal structure. The curtain includes air-sealing gaskets which extend substantially over the entire length of the longitudinal edges of the curtain at the blocks, in order to lock the passage of air between the guide rails and the blocks.

The invention relates to a vertically movable gate with a gate panel comprising several gate panel segments, where two adjacent gate panel segments are each hingedly connected to one another by way of at least one hinge, and with a motorized drive which transmits a force for lifting and lowering the gate panel via at least one drive means to the gate panel, and a connection means for connecting the drive means to the gate panel. Gates of the type mentioned at the outset are improved according to the invention such that, though such a gate can be moved easily between an open and a closed position largely independent of the forces arising, it nevertheless provides a compact and simultaneously stable and fail-safe design in that several gate panel segments are each individually connected to the drive means.

A closure may include a door configured to seal an opening. The door may include a section with an internal cavity. The closure may also include a core within a first portion of the internal cavity of the section. The core may be configured to expand from a relaxed state to an expanded state and provide a seal between the door and an edge of the opening when the core is in the expanded state.

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.