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Series 526 is a thermal storefront framing system developed and tested to the most stringent impact requirements using dry-glazed interior and exterior gaskets eliminating the usage of any structural silicone sealants. Series 526 is compatible with all EFCO standard 1 3/4" and 2" DuraStile® doors. Series 526 framing system is fabricated with shear blocks or screw spline configurations, which contributes to the system's design flexibility. The system utilizes #12 fasteners in a screw spline application, allowing for fabrication of ladders prior to installation and overall quicker installation time.

Screw spline construction
Allows assembly of sections prior to installation
Decreases installation time
Integral door adaptors
Compatible with all 1 3/4" EFCO doors
Contact EFCO Product Technical Services for 2" Doors
All joint fasteners are #12 screws
Simplifies fabrication
Strengthens system to allow transportation of ladders without damage to joinery system
Anodized and painted finishes available
Unlimited options to answer economic and aesthetic concerns
  • Screw Spline

    Screw Spline

    Details
    Elevations
  • Screw Spline

    Screw Spline

    Details
    Elevations