Cellar Doors by Steelway

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Replacing Your Corner Door

Corner Doors (or "One-legged" doors) are used on homes where one side of the cellar stairwell is also the side of the house and therefore there is no foundation upon which to mount the cellar door frame.

Use the following illustration as a guide to assist you while you take the required measurements listed below.
(You may want to print this page and use it on the jobsite)

These doors can be built either way... "right legged" or "left legged". The side of the new door that will be metal determines its name. (A "left legged" door is shown in the drawing)

Corner Door Measurement

Do You Need Your New Door Left Or Right Legged?

Inside Width of Foundation		Outside Width of Foundation
A1	A2	B1	B2

A1, A2, B1 & B2 are to be measured from the house wall to the opposite foundation. They ensure the door is the proper width.

Length of Foundation		Height of Doorway
C1	C2	D

C1, C2 ensure the door is the proper length.		D ensures the door is built high enough.