Old Fashioned Windows version of Double Hung Windows for dummies
The difference between double hung windows,casement windows and awning windows are how the open.
Double hung goes up and down and in some case a single hung where only the bottom sash moves
Casement window have hinges mounted on the sides of the sash and opens like a door. Casements can be either a single sash or made in pairs
Awning window have the hinges mounted on either the top or bottom of the sash. Also referred to as a hopper or basement sash.
The sash can vary in thickness but the most common is 1-3/8"
Barn or cellar sash are almost the same with the thickness being different generally 1-1/8.
When ordering any type of sash always give the width first then the height.
Double hung windows On most double hung sash the bottom sash is always 1" larger than the top sash. For duplication of existing sash measure the top and the bottom separately
Sash Thickness
1-1/8 most common for barn, cellar and wood storms and screens 1-3/8 most common for double hung, casement and awning sash 1-3/4 most common in factories and casements 1-3/4 and thicker can be made
Window Units all sizes listed on the pages are sash sizes there are adders to figure (RO) rough openings and (MO) for figuring masonry opens
For single units (RO) rough opening,the space between the studs, add 2" to the width and 4" to the height. (MO) masonary opening,the space between the brick or cement, add 4" to the width and 4" to the height.
For Mullion units (2 singles joined together) (RO) rough opening add 4" to the width and 4" to the height (MO) masonary opening, add 6" to the width and 4" to the height
For triple units (3 singles joined together) (RO) rough opening add 6" to the width and 4" to the height (MO) masonary opening, add 8" to the width and 4" to the height
When ordering or quoting window units or sash, state the size,light design,jamb width and exterior casing size.
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