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Sliding patio doors.
Expertly designed and built to heavy-duty specifications for smooth, durable operation. These will be the last patio doors you’ll ever replace.
Multi-point locking option2, 3 & 4 panelsU-Factor as low as .22
300 Series Sliding Patio Door
Make a grand entrance.
Weather-tight frames combined with the natural insulating qualities of vinyl reduce heat and cold transfer for year-round comfort — virtually maintenance-free.
Standard features
- 6″ fusion-welded vinyl frame and welded sash
- 12-gauge steel reinforcing
- Keyed lock cylinder with plated steel lock & striker
- Plated brass adjustable tandem rollers
- Security kick lock
- Dual-seal weatherstripping and internal weep system
- Low-rise sloped sill minimizes tripping and keeps water out
- Sliding screen standard
- 5′ and 6′ doors meet DP-50
Sizes & configurations
- 2-panel widths: 5′, 6′ and 8′
- 3-panel: 9′ and 12′
- 4-panel: 12′ (16′ available)
- Standard height 79-1/2″
- XO / OX — field reversible
Options
- Multi-point locking hardware
- Stainless steel tandem rollers
- Blinds between the glass
- 1″ glazing capability
- Flat, sculpted or SDL grids
- Knock-down frame available
Hardware finishes
Standard “D” handle in Crème White or Tan. Optional Elegant hardware in:
- Satin Nickel
- Oil-Rubbed Bronze
- Bright Brass
Energy performance
Three glass packages.
Standard double-strength tempered safety glass, with optional Low-E and argon — or UltraFlect for top performance.
Low-E package A
U-Factor.27
SHGC.27
Visible Trans..57
Air Leakage<0.3
Low-E package B
U-Factor.27
SHGC.22
Visible Trans..52
Air Leakage<0.3
UltraFlect
U-Factor.22
SHGC.21
Visible Trans..47
Air Leakage<0.3
Values from the 300 Series Sliding Patio Door brochure (3/2026). Ask your dealer to see the NFRC label.
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