A screen assembly used with a fenestration unit, the screen assembly capable of being installed at manufacture or retroactively to fenestration units. The screen assembly is installable on a fenestration unit having a frame and a window sash. The screen assembly includes a housing having a first housing member and a second housing member, wherein the housing forms a screen retention space between the first and second housing members when the screen assembly is in a closed position. It further includes a pleated screen positioned between the first and second housing members when the screen assembly is in the closed position, wherein the pleated screen includes a first end coupled to the first housing member and a second end coupled to the second housing member. The screen assembly also includes a catch element configured to releasably engage with the window sash.

A window air conditioner includes a housing including a separation groove dividing the housing into two parts, a mounting base movably mounted in the separation groove, and a sealing member connected with the mounting base. The sealing member is fitted with the mounting base by deformation, and the sealing member is configured to be driven by the mounting base to switch between a storage state and a working state. In the storage state, the sealing member is received in the separation groove. In the working state, the sealing member is at least partially outside the separation groove.

Method and apparatus for ventilating an interior space, such as a large industrial structure with at least one bay opening. A ventilation system includes an array of M by N fans stacked into a two dimensional (2D) array. A rigid frame supports the array. A seal assembly provides a nominally fluid-tight seal between an outer perimeter of the array and the bay opening. A locking assembly mechanically couples the frame to the bay opening. In some cases, a bay door can be partially retracted and attached to a top of the frame. In other cases, the bay door may be fluidically permeable (e.g., a chain, a screen, etc.) and the array is secured behind a fully closed door. Cooling air is directed out the bay opening at a suitable time, such as overnight. A soft-start motor capability can be used to initiate operation of the array.

A window replacement panel including an air conditioning vent incorporated into it. A window assembly may be attached to a decorative panel with a vent disposed on a first side, and a coupling for an AC duct on an opposite side. The window may be a single, double pane, insulated, uninsulated or the like. The panel may be clad with material to harmonize with the building exterior, and the exterior vent presents a pleasing appearance. The combination of window and panel may be sized to replace an existing window, or may be used in new construction.

A window replacement panel including an air conditioning vent incorporated into it. A window assembly may be attached to a decorative panel with a vent disposed on a first side, and a coupling for an AC duct on an opposite side. The window may be a single, double pane, insulated, uninsulated or the like. The panel may be clad with material to harmonize with the building exterior, and the exterior vent presents a pleasing appearance. The combination of window and panel may be sized to replace an existing window, or may be used in new construction.

An air purifying unit in which leakage of air flowing between a filter and a blowing fan is significantly reduced, and an air cleaning/ventilation device including the same, are provided. In addition, there are an air cleaning/ventilation device detachably installed in a window, used as a ventilation device, and used as an indoor air cleaning device.

An air purifying unit in which leakage of air flowing between a filter and a blowing fan is significantly reduced, and an air cleaning/ventilation device including the same, are provided. In addition, there are an air cleaning/ventilation device detachably installed in a window, used as a ventilation device, and used as an indoor air cleaning device.

An environmental window apparatus includes at least two dry open window (DOW) assemblies stacked on top of each other. Each DOW assembly includes a dry open window (DOW) structure having a plurality of louvers which, when viewed in cross section, have V or W shapes that enable air to pass through a window opening while limiting passage of precipitation, the precipitation being captured by the louvers for collection or drainage and a plurality of vertical members supporting the louvers in a spaced apart arrangement. A plurality of vertical rods are fixed to the vertical members of each DOW assembly by fasteners in a spaced apart arrangement to hold the DOW assemblies in place.

Several embodiments of a portable window insert for the temporary distribution of utilities, e.g., heat, air-conditioning, electricity, internet cables, water, and telephone cables through a window opening are described. All the devices are foldable for ease of portability and can be expanded to be secured in the window opening while minimizing air leakage through the window. In one embodiment a main panel has a pass-through opening through the panel for the utility lines, a handhold opening and a slider panel slidably engaged with the main panel. A flexible sealing member surrounds the pass through opening. A sealing panel is slidably mounted to the rear face of the main panel that may be selectively positioned to cover the pass-through opening or to uncover the pass-through opening. When the slider panel is in a retracted position the pass-through opening is covered by the slider panel and the hand hold is exposed for use and ease of portability. When the slider panel is in the extended position the edges of the main panel and slider panel abut the sides of the window opening to secure the portable window insert in the window opening and to expose the pass-through opening for use. The sealing panel may be selectively positioned to cover the pass-through opening to inhibit the passage of air and utility lines there through or to uncover the pass-through opening to permit the passage of utility lines there through.

A sash window fastener includes: a latch assembly; a sash lock assembly mounted upon the meeting rail; and a stop member mounted to the master window frame. The lock assembly includes a pivotable cam to engage a keeper on the master frame to lock the window, and a pivotable follower arm. The arm interconnects with the latch assembly within the meeting rail, so cam rotation that drives arm rotation also causes translation of the latch. The cam may occupy: an extended position to secure the cam to the keeper, with the latch engaging the master frame to prevent tilting, and being positioned below a protrusion on the stop member to redundantly lock the window; a first retracted cam position permitting sliding of the window; and a second retracted position permitting tilting of the sash window. Additional protrusions may be used on the stop member to serve as vent stop positions.