A hinge assembly includes a pair of lower mounting brackets, at least two upper hinge leaves, a pair of side brackets coupled to the sidewalls of the ventilation fan lid, each side bracket having at least one third axle hole therethrough, an axle pivotally coupling the upper hinge leaves to the lower mounting brackets. Each lower mounting bracket has a vertically oval-shaped axle hole. Each upper hinge leaf includes a U-shaped mounting member and a hook shaped clamping plate coupled to the U-shaped mounting member through threaded tension bolts. The upper hinge leaf also has a pair of axle holes. The axle extends through the elongated axle holes of the lower mounting bracket vertical flange and through the axle holes of the U-shaped member.

A ridge vent for ventilating a roof of a building via a hole along a roof ridge to atmosphere, the ridge vent comprising a first ridge vent panel: a flange portion for resting on the roof, the flange portion having an opening for overlapping with the hole, the flange portion having a first flange portion positioned to one side of the opening and a second flange portion positioned to another side of the opening, such that the first flange portion and the second flange portion are at an acute angle with respect to one another; a frame portion coupled to the flange portion and having sides extending upwardly from the flange portion about the opening, the frame portion for maintaining a cap portion in a spaced apart relationship with the flange portion; the cap portion connected to the frame portion and covering over the opening; a first corrugated filter plate extending between the cap portion and the flange portion and positioned transversely between the opening and the atmosphere, the first corrugated filter plate positioned to said one side of the opening; and a second corrugated filter plate extending between the cap and the flange portion and positioned transversely between the opening and the atmosphere, the second corrugated filter plate positioned to said another side of the opening; wherein the corrugated filter plates providing for a passage of air between the atmosphere and the opening, the corrugated filter plates having a pore size sufficient for facilitating the air passage of air through the corrugated filter plates while blocking passage of atmospheric particles through the corrugated filter plates.

A ridge vent for ventilating a roof of a building via a hole along a roof ridge to atmosphere, the ridge vent comprising a first ridge vent panel: a flange portion for resting on the roof, the flange portion having an opening for overlapping with the hole, the flange portion having a first flange portion positioned to one side of the opening and a second flange portion positioned to another side of the opening, such that the first flange portion and the second flange portion are at an acute angle with respect to one another; a frame portion coupled to the flange portion and having sides extending upwardly from the flange portion about the opening, the frame portion for maintaining a cap portion in a spaced apart relationship with the flange portion; the cap portion connected to the frame portion and covering over the opening; a first corrugated filter plate extending between the cap portion and the flange portion and positioned transversely between the opening and the atmosphere, the first corrugated filter plate positioned to said one side of the opening; and a second corrugated filter plate extending between the cap and the flange portion and positioned transversely between the opening and the atmosphere, the second corrugated filter plate positioned to said another side of the opening; wherein the corrugated filter plates providing for a passage of air between the atmosphere and the opening, the corrugated filter plates having a pore size sufficient for facilitating the air passage of air through the corrugated filter plates while blocking passage of atmospheric particles through the corrugated filter plates.

A roof vent cover that is configured to be superposed a roof vent of a building wherein the roof vent cover of the present invention is operable to inhibit the building of wasps nests and the like through creation of an undesirable environment. The present invention includes a base plate member that is planar in manner and configured to be surroundably mounted to an aperture in a roof. The roof vent cover further includes at least one wall member extending upward from the base plate member. Superposed the at least one wall member is an upper cover member operable to inhibit rain from penetrating into the roof vent cover. Both the wall member and upper cover member are constructed from a transparent material so as to allow light to pass therethrough in order to provide an environment unlikely for a wasp or similar insect to build a nest.

An enclosed space is provided that includes a ceiling, base structure, a plurality of walls, at least one sliding door, a controller, an input air fan and an air outlet. The height and inclination of the base structure are adjustable. The base structure has a first profile; a second profile; and one or more bolts for arranging a tilting angle between the first profile and the second profile. At least one of the walls include an opening for accessing the enclosed space. The door includes two parallel glass panels. The input air fan includes an air filter and the air outlet includes a flow meter configured to provide flow information to the controller.

A roof ventilation system having a housing with an integrated fan and power source, such as a solar panel, for integration into a roof ridge vent or a roof soffit and having a flexible center area to adjust the profile of the housing to accommodate the profile of the roof ridge vent or roof soffit.

A roof vent system includes an attic flange member for installing adjacent a roof sheathing inside an attic, a roof skirt coupled to the attic flange and installed on an exterior of a roof, and a roof transition duct having an exterior opening that permits the ingress and egress of air through the roof vent system. The roof transition duct is coupled to the roof skirt and defines an upper end of the roof vent system. A grill is positioned over the exterior opening.

A roof vent system includes an attic flange member for installing adjacent a roof sheathing inside an attic, a roof skirt coupled to the attic flange and installed on an exterior of a roof, and a roof transition duct having an exterior opening that permits the ingress and egress of air through the roof vent system. The roof transition duct is coupled to the roof skirt and defines an upper end of the roof vent system. A grill is positioned over the exterior opening.

An exhaust vent cap assembly can be installed in a roof deck of a building to allow a one-time connection of the insulated duct to the roof from exhaust fans within the building.

A multifunction adaptive whole house fan system can include a whole house fan to pull large volume of air through a building structure. The whole house fan can pull air from a motorized window or damper into the building structure and expel air through an attic. The system can monitor the environment to operate the whole house fan when desired conditions are present in coordination with other systems of the building structure to reduce overall energy consumption.