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Making Sense of Standard Window Sizes | Pella
RELIABILT 150 Series 31.5-in x 53.5-in x 3.25-in Jamb Vinyl New Construction White Single Hung Window Half Screen Included in the Single Hung Windows department at Lowes.com
RELIABILT 150 Series 31.5-in x 51.5-in x 3.25-in Jamb Between The Glass Vinyl New Construction White Dual-pane Single Hung Window Half Screen Included in the Single Hung Windows department at Lowes.com
Single-Hung Windows - Rectangle Dimensions & Drawings | Dimensions.com