WEBBILCO Basement Doors meet the International Building Codes found in section R310.3.
Basement Door Sizing Guide - BILCO
WEBUse our on-line basement door sizing guide to find the proper size basement door for your home. Simply enter your zip code and your areaway dimensions on the next page and the sizing guide will tell you the BILCO model that you need and your nearest BILCO basement door retailer.
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The BILCO Company
WEBMeasure the width (W), length (L), and height (H) of your BILCO Basement Door as shown in the photo below. If your door has an extension panel(s), skip to Step 3 as you have a Size C basement door.
WEBBasement Door Standard Sizes and Dimensions. Classic Series Steel Sided Doors. * Extension Panels are available to increase the basement door length (Size C Doors only). Two or more can be used back to back for longer areaway lengths. Classic Series Sloped Wall Doors (BR) * Extension Panels are available to increase the basement door length.
WEBClassic Series Sloped Wall Doors (SLW) *The SLW door length is adjustable for installation flexibility. Bilco Basement Doors meet the International Building Codes found in section R310‐subsection R310.3.
WEBClassic Series Sloped Wall Doors (SLW) *The SLW door length is adjustable for installation flexibility. Bilco Basement Doors meet the International Building Codes found in section R310‐subsection R310.3.
WEBFollow the instructions below to calculate the proper size door for your areaway. An electronic version of this sizing guide is also available at www.BILCO.com.
WEBUltra Series Basement Door Standard Sizes and Dimensions. Ultra Series doors are only available in Size C at this time. *Verify clearance if there is a wall on either side of the door **Extensions are available to increase the door length in …
WEBMeasure dimension L1, the inside length, and L2, the out-side length of the areaway foundation. Using table below, select a model whose inside door width. is equal to or more than W1 and less than W2. Examples: W1 = 38” - Select BR-2.
WEBSpecifications: Bulkhead door to basement shall be Bilco Size ____ (and size of extension, if required) with Size ____ Bilco Stair Stringers (and size E extension, if required).