Exit window sizes

Interior · Windows, Skylights and Solariums · printed page 366 (PDF page 367)

Book index entries

Exit Window Sizes Exit Sizes Skylight – Window and Solarium from the Inside and Window and Skylight from the Inside Skylight and Solarium from the Inside

Text in the illustration

(US)
(Canada)
minimum area 5.7 sf
minimum width 20"
minimum height 24"
maximum sill height - 44"
minimum area 3.8 sf
minimum width 15"
minimum height 15"
maximum sill height - 40"
note: rules are different for basements

Generated explanation

The illustration compares exit-window opening dimensions and maximum sill heights labeled for the US and Canada. The US example specifies a minimum opening area of 5.7 square feet, minimum width of 20 inches, minimum height of 24 inches, and maximum sill height of 44 inches. The Canadian example specifies a minimum opening area of 3.8 square feet, minimum width and height of 15 inches, and maximum sill height of 40 inches. Vertical arrows measure sill height from a floor reference line beneath each window. A note states that rules are different for basements.

Components

exit windows window frames window openings window sills