Various systems and methods are provided for controlling access to the insulated glass space of a fenestration unit. A hinge lug is provided including a lug body having a mounting portion, a cam portion defining a curved cam surface, and a retention portion projecting from the cam portion, and a first retention arm extending from the lug body such that the retention arm is elastically deflectable away from the retention lip. A restrictor link is provided including a restrictor link body having a first end and a second end, wherein the restrictor link body is elastically deflectable, a securing lock positioned proximate the second end, and a cap extending from the securing lock, the cap defining an engaging surface operable to engage the lip channel of the sash. A latch system is provided including a latch base with a ramp access aperture and a latch body including a ramp.

Exposed edge margins that are formed when a window film is installed on a glazing surface using an aqueous fluid as a lubricant are immediately covered by a series of elongated members that adhere to one or more of the window film or the surrounding frame. The elongated members provide concealed gaps or channels that allow for the slow evaporation of the aqueous fluid as the adhesive on the window film slowly wets and develops maximum bond strength to the glazing surface. The elongated members are preferably left in place as an inner frame. The inner frame device and method can be deployed in attached an light control film to a window, such as UV protective film, IR rejecting film, absorbing film and daylighting film.

We disclose methods of blocking the transmission of COVID-19 and other airborne pathogens between people standing on either side of a door separating an interior space from an exterior space. In a preferred embodiment, the method comprises hingedly mounting a rigid transparent gate directly to the door so that the gate swings independently of the door. Preferably, the gate is dimensioned to substantially fill the width defined by the frame holding the door. The method further comprises releasing the gate from a storage position against the door, coupling the gate to the door frame and opening the door.

A novel and useful frameless supplemental window for fenestration incorporating infiltration blockers suitable for use with existing windows. The supplemental window, in one embodiment, comprises plastic sheet material with bullnose edging around it. Corner braces add rigidity and strength to corners in several embodiments. An attachment mechanism secured either to the sheet material or the bullnose edge functions to fasten and/or seal the supplemental window to an existing window. Infiltration blockers fastened to the sheet or bullnose prevent or minimize air leakage around various window elements. The bullnose edging and infiltration blockers function to substantially enclose (i.e. trap) a volume of air between the window pane and the plastic sheet material. The supplemental window is configured such that the layer of air enclosed is of an optimum thickness within a preferred range of 0.15 to 0.75 inches to maximize thermal insulation properties of the supplemental window.

A novel and useful frameless supplemental window for fenestration incorporating infiltration blockers suitable for use with existing windows. The supplemental window, in one embodiment, comprises plastic sheet material with bullnose edging around it. Corner braces add rigidity and strength to corners in several embodiments. An attachment mechanism secured either to the sheet material or the bullnose edge functions to fasten and/or seal the supplemental window to an existing window. Infiltration blockers fastened to the sheet or bullnose prevent or minimize air leakage around various window elements. The bullnose edging and infiltration blockers function to substantially enclose (i.e. trap) a volume of air between the window pane and the plastic sheet material. The supplemental window is configured such that the layer of air enclosed is of an optimum thickness within a preferred range of 0.15 to 0.75 inches to maximize thermal insulation properties of the supplemental window.

A secondary window includes a first glazing, a film, and a first frame. The first glazing includes a glass substrate having a thickness, between a first glazing surface opposite a second glazing surface, less than 2.0 millimeters. The film is attached to the first glazing surface. The first glazing is secured in the first frame, which at least partially surrounds the glazing. A second secondary window includes a second glazing secured in a second frame, which at least partially surrounds the second glazing. The second glazing includes (a) a first pane having a first-pane thickness less than 2.0 millimeters and (b) a second pane having a second-pane thickness that exceeds the first-pane thickness.

A secondary window includes a first glazing, a film, and a first frame. The first glazing includes a glass substrate having a thickness, between a first glazing surface opposite a second glazing surface, less than 2.0 millimeters. The film is attached to the first glazing surface. The first glazing is secured in the first frame, which at least partially surrounds the glazing. A second secondary window includes a second glazing secured in a second frame, which at least partially surrounds the second glazing. The second glazing includes (a) a first pane having a first-pane thickness less than 2.0 millimeters and (b) a second pane having a second-pane thickness that exceeds the first-pane thickness.

The present disclosure describes various embodiments of a concealed or hidden door closer that is installed in a rail of a door assembly. In some embodiments, the door frame and door closer components are configured to allow the door assembly to be readily installed as either a left or a right hand hinged door.

The present disclosure describes various embodiments of a concealed or hidden door closer that is installed in a rail of a door assembly. In some embodiments, the door frame and door closer components are configured to allow the door assembly to be readily installed as either a left or a right hand hinged door.

The present disclosure describes various embodiments of a concealed or hidden door closer that is installed in a drip cap of a door assembly. In some embodiments, the door frame and door closer components are configured to allow the door assembly to be readily installed as either a left or a right hand hinged door.