A tube filled with special parafine oil expands when the temperature reaches around 72º, and a piston will push the window open up to about 14". When the temperature falls, a heavy spring pulls the window closed. No electricity is needed!

Automatic Opener for Roof Window

Color: Jet Black
    • Black Instagram Icon
    • Black Facebook Icon
    • Black Houzz Icon

    North Dakota Contractors License No. 49913

    Fargo, ND

    © 2013-2021 by 46 North Landscaping & Design Inc