CASEMENT & AWNING WINDOWS
Minimum R.O.
Clear Opening
Width = window width − 5.809
Window width ≥ 24
1
/8" with straight arm operator
= window width − 6.102 Window width ≥ 17" with split arm operator
Height = window height − 4.432 Window height ≥ 40
13
/16" and < 48", width ≥ 28
3
/8" and < 31
1
/2"
= window height − 4.852 All other window heights
Vent Opening
Width = window width − 5.809 Window width ≥ 24
1
/8" with straight arm operator
=(window width − 9.665) X 1.07 Window width ≥ 28
3
/8" with straight arm operator and control bracket
= window width − 9.702 Window width ≥ 17" with split arm operator
Height = window height − 4.432 Window height ≥ 40
13
/16" and < 48", width ≥ 28
3
/8" and < 31
1
/2"
= window height − 4.852 All other window heights
Unobstr. Glass
Width = window width − 4.852
Height = window height − 4.326
Width = window width +
1
/2"
Height = window height +
1
/2"
Custom Casement Window Opening Specications
Custom Awning Window Opening Specications
Clear Opening
Width = window width − 4.532
Height = 6.38
Window height ≥ 17" and ≤ 20
1
/2"
= 6.44 Window height ≥ 20
1
/2" and ≤ 24
1
/8"
= 6.50 All other window heights
Vent Opening
Width = window width − 4.532
Height = 6.38
Window height ≥ 17" and ≤ 20
1
/2"
= 6.44 Window height ≥ 20
1
/2" and ≤ 24
1
/8"
= 6.50 All other window heights
Unobstr. Glass
Width = window width − 4.35
Height = window height − 4.732
Minimum R.O.
Width = window width +
1
/2"
Height = window height +
1
/2"
Unobstr. Glass
Width = window width − 4.8
Height = window height − 4.8
Minimum R.O.
Width = window width +
1
/2"
Height = window height +
1
/2"
Custom Picture and Transom Window Specications
Custom Window Size Range
CUSTOM WIDTHS (w)
CUSTOM HEIGHTS (h)
Casement Stationary/Venting
(w) 1'-5" to 2'-11
7
⁄ 8" X (h) 2'-0
1
⁄ 8" to 5'-11
7
⁄ 8"
Casement/Awning Transom (CTR)
(w) 1'-5" to 7'-0
5
⁄ 8" X (h) 1'-0"
Awning Stationary
(w) 2'-0
1
⁄ 8" to 5'-11
7
⁄ 8" X (h) 1'-5" to 2'-11
7
⁄ 8"
Awning Venting
(w) 2'-0
1
⁄ 8" to 4'-0" X (h) 1'-5" to 4'-0"
(w) 4'-0
1
⁄ 8" to 5'-11
7
⁄ 8" X (h) 1'-5" to 2'-11
7
⁄ 8"
Custom-size awning windows wider than 4'-11
7
⁄ 8" and
taller than 2'-7
1
⁄ 2" must be stationary only.
CUSTOM HEIGHTS (h)
CUSTOM WIDTHS (w)
Casement/Awning Picture Window
(w) 3'-0" to 4'-11
7
⁄ 8" X (h) 3'-0" to 5'-11
7
⁄ 8"
(w) 5'-0" to 5'-11
7
⁄ 8" X (h) 3'-0" to 4'-11
7
⁄ 8"
Picture Transom (PTR)
(w) 3'-0" to 5'-11
7
⁄ 8" X (h) 1'-0"
CUSTOM HEIGHTS (h)
CUSTOM WIDTHS (h)
Available in
1
⁄ 8" increments.
Windows can also be custom sized to match standard
sizes ending in a sixteenth of an inch.
Custom sizing is available for single windows only.
To achieve a custom-size double or triple combination,
join custom-size single windows together.
Minimum and maximum widths and heights.
Custom Measurement Guide & Worksheet
Go to andersenwindows.com/400seriescasement.
Guide and worksheet are listed under the "Installation
and Warranty" tab.
Clear Opening Calculator
Go to andersenwindows.com/400seriescasement.
Calculator is found by selecting "Egress & Opening
Specications" under the "Sizes and Shapes" tab.
2011-12 400/200 Series Product Guide
