The Andersen Sill Angle Finder app helps you determine the sill angle (sill slope) of an existing window. Knowing the existing sill angle will help determine which sill angle you should select when ordering Andersen® replacement double-hung windows.
The Andersen Sill Angle Finder app helps you determine the sill angle (sill slope) of an existing window. Knowing the existing sill angle will help determine which sill angle you should select when ordering Andersen® replacement double-hung windows.