• All fusion welded frame and sash for extra strength
• 7/8" insulated glass with 100% Super Spacer in several glazing options 
• Steel reinforced sash rails
• Dual seal weatherstrip with full interlock for minimal air infiltration
• Heavy duty screen frame with aluminum screen wire
• Low profile, fiberglass composite sill for great thermal performance and strength.
• Deluxe legacy D shaped handle with key lock - standard
• 4 1/8" frame depth.
• 5', 6', 8' 9' & 12' sizes.

• Notched, mechanically fastened frame
• 5/8" insulated glass with 100% Super Spacer in several glazing options 
• Steel reinforced sash rails
• Dual seal weatherstrip with full interlock for minimal air infiltration
• Aluminum thermally broken sill
• Available with applied nailing fin for three sides
• 4 1/8" frame depth
• 5', 6', 8' 9' & 12' sizes

CA1490 Construction detail