Standard Size Bathroom Ventilation Window Height

Standard fan sizing applies to bathrooms that are 100 square feet or less.

Standard size bathroom ventilation window height.

Mechanical ventilation system bathroom exhaust fans ceiling mounted exhaust fans for bathroom. That way door trim and window trim line up. The rule of thumb is that you need at least 1 cfm per square foot of room area. Usually taller doors are used with ceiling height 10 or more.

They re more effective for ventilation purposes than double or single hung windows and they re comparable in price. It is pretty much standard for bathroom exhaust fans to meet these requirements though it should be stated in the product description of your fan. You may want to coordinate the height with the tiles or other wall finishes or with the height of the windows and doors in the room. Look for more power if your bathroom has high ceilings.

If you have transom or using taller doors then this changes. Don t be afraid to set the top of the window clear up to the cornice trim. Showers that have a steam function need to be completely enclosed as seen here. Basically the 15l s or 54m3 hr refers to the measurement of how much old air is replaced by new air.

Thus installed window gives fresh air to the bathroom. Otherwise the top of the glass should reach at least 76 inches 193 centimeters above the floor. It s properly installed giving full ventilation to the space. My understanding is that top of the window is set at 80 6 8 which is the standard door height.

Casement windows height range from 2ft 5 5 inches to a maximum of 6 ft 5 5 inches tall. Bathroom vent fans are rated for the amount of air they can move measured in cubic feet per minute or cfm. The window should be proper having a size of 3 x2. With a standard wall height of 8 feet that leaves a 16 inch gap between the top of the window and the ceiling perfectly sized for standard headers and plates and accommodating of even the biggest window trims and cornice moldings.

Check before you choose it. That basic formula for an average size bathroom needs a little tweaking if the ceiling stretches past the standard 8 foot height. But in a room deeper than 12 feet that band of wall pinches the view and it s silly to keep the top of the window at 6 feet 8 inches with newer 9 and 10 foot ceilings. This picture is contributed by persis 2.

Standard fan sizing.