A dark-out apparatus is provided for use with a ventilation fan disposed on the wall of an agricultural building for passing ventilation air from one side to the other. The dark-out apparatus includes light-trapping media and first and second door members for holding the light-trapping media and being movable between open and closed positions and being openable away from the wall. When in the closed positions, the first and second door members cover a ventilation port of the fan, and when in the open positions, the first and second door members expose the ventilation port. When in the closed positions, distal sides of the first and second door members define an air gap. The air gap allows ventilation air to pass through, but does not allow ambient exterior light to pass through.

A vent with an adjustable baffle is disclosed. As the baffle is rotated away from the frame of the vent a corresponding opening is formed though which air may flow. The vent further has features which constrict the width of the opening in response to how far the baffle is opened. When the baffle is partially opened, these constricting features block a portion of the vent opening resulting in an opening of a certain width. The baffle can be opened further to a point beyond the constricting feature so that a wider vent opening is created. The design allows for more, and easier control of air flow in a system and can increase the distance air coming though the vent moves into the space before it descends.

A hanging pet house has a first frame and a second frame. A fabric housing has a number of detachable sleeves that attach to the first frame and the second frame. A pair of connectors attach to a wall or window. A pair of strings attach to the pair of connectors and the second frame. Because the hanging pet house connects to a window it is out of the way and allows the cat to look outside and bask in the sun. The hanging pet house folds down into a small package that is easy to ship and does not take up a lot of shelf space

A pet carrier includes a main box and a door. The main box has a lateral wall and a back board to form an integral member. The main box has an opening and a room therein. The main box is provided with a plurality of ventilation bores, which are communicated with the room. The main box is provided with two ribs to enhance its strength. The door connected to the main box to open and close the opening.

A Pipe and Strap Operating Drive System (PSODS) is disclosed which efficiently and accurately positions a blocker, or door mechanism, over an opening that is of exact or similar profile and dimensions as the door mechanism. In the preferred embodiment, PSODS is used to vary the position of a poultry house ventilation blocker or door mechanism from a tightly-closed position against the opening, or when required, within a certain range of door mechanism open positions, as dictated by weather conditions or internal air quality. Essentially, the inventive concept featuring PSODS utilizes at least one strap, wherein a first end of each strap is wound about a length of pipe, termed a pipe drive. The second end of the strap is attached proximate an upper edge of the door mechanism. As the pipe drive is rotated, the attached strap(s) control movement of the door mechanism toward a closed or open position.

An animal house climate control system uses a method for operating a baffle of an air inlet of an animal house with a motor using timed inlet control. The method includes performing a calibration sequence to calculate opening velocity and opening inertia values and closing velocity and closing inertia values. The method also includes moving the baffle from an initial position to a final position by calculating a calculated power on time for the motor using the opening inertia or closing inertia values. The method can also include calculating a real position error value by comparing the calculated on time for the motor and a measured on time for the motor and using the real position error value to calculate adjusted opening and closing velocity values.

A reptile hide assembly including, at least one reptile hide comprising a hollow structure constructed of a translucent heat resistant material having at least one opening to provide access and egress for a small creature, a plurality of removably-coupleable tubular structures and at least one elevating stand configured to provide viewing to an observer of the small creature within the reptile hide. The device may be modularly assembled.

A ventilation apparatus for ventilating a building. The ventilation apparatus comprises a casing comprising: a cavity for housing a removable heat-exchange cartridge; a service door providing access to the cavity; a primary and secondary pathways fluidly connecting the inside of the building to the outside of the building, wherein the primary pathway and the secondary pathway cross the cavity along about perpendicular axes; a primary ventilator for forcing an airflow in the building through the primary pathway; and a controllable secondary ventilator for forcing a controllable airflow through the secondary pathway. The ventilation apparatus, when the casing houses the heat-exchange cartridge, has the primary ventilator forcing an inflow of air through the primary pathway, and (ii) the controllable second ventilator for controllably forcing either an outflow or an inflow of air through the secondary pathway. The ventilation apparatus, without heat-exchange cartridge, has only inflow(s) forced through the pathway(s).

An animal containment and automatic release enclosure is disclosed featuring a unitary structure providing a secure interior space for animals. The enclosure incorporates ventilation apertures, enabling the animal to access fresh air for breathing and ventilation. Environmental sensors in wireless communication with a personal device continuously monitor the enclosure's conditions, ensuring the animal's well-being. Wirelessly controlled enclosure doors, operated by an electric enclosure door control device, provide convenient access to the enclosed animal. The system further integrates external sensors, such as a carbon monoxide sensor for monitoring external CO levels, a moisture detection pad sensor to identify liquid accidents, and a temperature sensor to regulate internal temperature. The enclosure is designed to cater to various environments, including those with potential carbon monoxide exposure, making it suitable for use in multiple settings. It can be employed by veterinarians, law enforcement personnel, military professionals, security experts, pet owners, and animals trained for specific tasks. Additionally, remote access is possible through a personal communication device.

A filter assembly including a rectangular inlet frame having a rectangular inlet opening configured to receive a primary filter and optionally a prefilter. The filter assembly may include a rectangular outlet frame and a housing body. The rectangular inlet frame may also be used as a housing by itself to support and house primary filters and prefilters. A gridwork including one or more grid dividers may be used in the rectangular inlet frame to provide 2 or more openings for receipt of filters.