4400 | Sliding Glass Vinyl Door

XO or OX Design: We utilize XO and OX designs with the non-operating lite glazed directly into the fully fusion-welded extruded UPVC 4 5/8" frame. This enhances air infiltration performance and cuts installation time substantially.

Double Weatherstripping: Twin fin-seal weatherstripping provides a tight seal at the operator panel.

Aluminum Sill Cap: Our UPVC sill is enhanced with a heavy-duty extruded aluminum cap. This makes the entire area more durable, for years of maintenance free use.

Hardware: Heavy-duty color matched hardware is standard. Brass, pewter or oil rubbed bronze hardware and keyed cylinder locks or painted 2-point locks are available options. Our sash operates on adjustable heavy-duty, stainless steel ball bearing rollers.

Aluminum Stiffeners: Our 4400 door houses a tubular aluminum-reinforced extrusion at the vertical meeting rail and vertical sash styles. We also have a galvanized stiffener in the mainframe head. This provides outstanding structural integrity and eliminates header sag, which is common in other vinyl doors.

Full Interlock: Our 4400 is fully interlocked at the vertical meeting rail and weatherstripped with fin-seal. Its flared interlock design provides for a solid fit at the meeting rail.

The 4400 Sliding glass door comes with 1" insulated clear or argon filled Loɳ high performance glass. Double LoÉ or laminate glass options are also available.