A tube filled with special parafine oil expands when the temperature reaches around 72º, causing a piston to push the louver blades open. When the temperature falls, a heavy spring pulls the louver blades closed. No electricity is needed!

Automatic Opener for Louver Window

    • 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