X5 Double Hung Window Features:
• Fully Welded Frame and Sash with an exceptional thermal
efficiency and outstanding strength.
• Optional Foam-Filled Insulated Extrusions for energy efficiency.
• Insulated Extra-Strength Glass increases strength and
• Heat Seal® Glass System offers thermal efficiency for
fuel cost savings in any season.
• Power Lift™ Balance System allows smooth window operation.
• Full Interlock with Triple Weather-Stripping provides low air
infiltration for increased comfort.
• One Piece Sloped Sill helps eliminate clogged and frozen weep
holes as well as reducing air infiltration and chimney effect drafts.
• Heatseal® Warm Edge Spacer System for excellent thermal
efficiency and drastic reduction in the possibility of condensation on
the inside of the window.
• Available in Replacement and New Construction applications.