WINDOW VENT FRESH F40

Adjustable slot valve, for example, for installation above a window. The external design of the F40 slot valve prevents water from entering. Install into the window frame by drilling either 10 mm holes or milling a continuous opening. The valve's air deflector directs outdoor air upward within the room.

The advantage of the Fresh 40 slot valve or window valve is its unique design: the valve flap directs incoming air upward, significantly reducing the draft sensation. The valve can also be closed using the valve flap (not recommended). Air channels are created by drilling. The complete unit consists of an internal part equipped with air intake openings and a fixed filter, and an external part with a mesh for insect filtration.

The internal cover of the Fresh 40 slot valve or window valve controls the direction and volume of incoming air by opening or closing it. Note! When installed horizontally, position it so that the hinge side of the internal cover is at the bottom. This directs incoming air upward, allowing it to mix more quickly with warmer room air, reducing the draft sensation.

The fixed filter can be cleaned using a mild soap solution. The filter is located beneath the cover. To ensure fresh air exchange, it is advisable to clean or replace the filter 1-2 times per year. The fixed filter product number is 403276 (LVI number 8823722).

Internal valve dimensions: width 485 mm, height 19 mm, depth 13 mm. Opening size 400x10 mm, or drill 24 holes of Ø10 mm. For easier installation, the package includes a drilling template; a metal drilling template is also available as an accessory (8823755/400020). The F40 valve capacity is 9.2 l/s (10 Pa).

This product description is an automated translation of the original Finnish description.