Bilco Steel Sided Basement Doors

How To Select the Proper Model 

The following instructions will help you select the proper size steel sided door for your home. You may want to print this page to use as a worksheet. 

STEP 1: Measure your areaway foundation
  1. Disregard your old door and measure (in inches) the dimensions of the existing areaway foundation.
  2. Measure dimension W1, the inside width,
    and dimension W2*, the outside width of the foundation sloped side walls. Walls may not be uniformly spaced, so check at several points for the narrowest dimension.
  3. Measure dimension L1, the inside length, and
    dimension L2, the outside length of the
    areaway foundation.

*The frame of the Bilco door must overlap the foundation sidewalls by at least 2" on each side. Bilco foundation plates are available to reduce the inside width of the areaway for proper fit of the Bilco Door.

STEP 2: Record your foundation dimensions in the boxes shown:

Please enter all dimensions in inches and fractions in decimal format (example: 43¼ should be entered as 43.25)

Width

Length
Inside:  " Outside: "   Inside: " Outside: "