Manufactured in Medford, NJ

Patio Doors

When that sliding door continually gets stuck, it's time to shop for a new one. For that, look to Jantek Windows for high quality, energy-efficient patio doors from Medford, NJ. Our company manufactures and installs outstanding window products, including patio doors that carry transferable lifetime warranties.
We make our ENERGY STAR® patio doors with durability and functionality in mind. The doors are reinforced with heavy gauge steel and feature a full interlocking meeting rail. The sliding panel rides on a cadium steel rolling system for easy operation. The threshold features a durable anodized aluminum sill cover to last a lifetime. Each door comes standard with a brushed-nickel handle with a key lock and dual opposing lock mortise. An optional brass handle is also available.
Look for our sliding glass doors to come in both double and triple-panel models. All panels come with code-compliant tempered safety glass in all panes.
Download Product Sheet

Product Specifications

Standard Features:
  • Custom manufactured to your specifications or job requirements.
  • Multi-Chambered Vinyl Frames
  • Fusion-Welded Sash & Mainframe
  • Full Vertical Heavy-Gauge Aluminum Reinforcement in Sash Frames
  • Available in Double (5'-6'-8') or Triple Panel (9' or 12')
  • Custom Sizes Optional
  • Double or Triple-Pane Option
  • Tempered Safety Glass in All Panes
  • Warm Edge Spacer System
  • Multi-Chambered Vinyl Frames


Download Product Sheet

ENERGY STAR®/NFRC Performance Ratings with Low E Glass

  • U-Factor (Insulation Value): Double Glass =.29 (R3)/ Triple Glass .20 (R5)/ Triple Krypton (R6)
  • SHGC: Double Glass = .31/ Triple Glass = .26
  • Air Leakage Rating: .20
  • Condensation Resistance: Double Glass = 58/ Triple Glass = 67

Count on our team for excellent patio door installation services. Request a free TeleEstimate/Virtual Estimate