Solid Vinyl, Multi-Chambered Construction.
Fully fusion welded frame and sash.
Dual-Pane 13/16" performance insulating glass.
Peak Performance Glass package with LowE & Argon gas fill.
Accu-Track System with Dual Weather Loc Finseal Weather-Stripping.
Full vinyl interlock.
Double wall slide rails on Monorail track system.
Multiple brass roller wheels.
Fiberglass half screens (full screens optional)