Trailers have many different options from which to choose, including window types for both the horse and owner. Windows are critical to the horse because ventilation is key to reducing hauling stress and preventing respiratory illnesses associated with hauling, such as shipping fever.
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Slide Windows
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Slide windows are a common type used for both the horse hauling area of the trailer and for living quarters and mid-tacks (a room between the living area and horse area for storing saddles and feed). When used for the horses, slide windows generally have interior bars to prevent the horse from sticking his nose through the opening. Slide windows provide a lower level of ventilation than other types of windows, but are sturdy and safe.
Slide windows may also be designed as escape windows for the living quarters. The entire window construction will pop out of the frame of the trailer in the case of an emergency such as a fire.
Drop Down Feed Doors
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Drop down feed doors provide maximum airflow for the horse. The entire window literally drops down, creating a huge opening for air. For safety reasons, drop down windows generally have interior bars or some type of screen to prevent the horse from sticking his head through the opening.
Drop down doors should be solidly constructed as they will often be opened and closed many times throughout the life of the trailer and should seal well when closed. Handles should be easily accessible to the operator.
Bus Windows
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Slatted windows are referred to as bus windows. Though not as popular as slide and drop down windows, bus windows are often used on the hind side of the trailer and for stock trailers.
Slatted windows provide adequate airflow, particularly when paired with other windows on the front end. Bus windows are sometimes built with tracks; plexiglass can be cut to fit the windows and slid into the tracks to reduce the airflow in colder conditions.
Safety Considerations
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Regardless of window type, certain safety measures should be considered. Interior bars should be smooth and free of any sharp edges which could cut a horse; bars should be narrow enough that a horse's hoof could not get stuck between them. Windows should be high enough that a horse could not paw or kick and get his hoof through the window. Shatterproof safety glass is preferable and tinted windows help keep the interior of the trailer cooler.
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