Designed to fit openings up to 26’2” wide and 20’1” high, the 521 Model features a wide, 2 11/16” center stile, a 2 3/8” or 3 3/4” top rail, and 3 3/4” or 4 1/2” bottom rail. A variety of glazing choices, finishes, and unique options are available.

General Features and Benefits – Models 511/521:

1 3/4″ (45 mm) thick, corrosion-resistant 6063-T6 aluminum sections with galvanized fixtures and hinges promote durability and trouble-free operation

1/4″ (6 mm) diameter through-rods on all stiles and rails enhances strength and sturdiness

Top-quality materials, excellent field service, and an optional maintenance program contribute to extended door life, low maintenance costs, and maximum productivity.

Glazing choices include DSB glass, acrylic, tempered glass, clear polycarbonate, multi-wall polycarbonate, wire glass, Low E, Lexan, and laminate.

Standard clear anodized finish for low-maintenance and corrosion-resistance

Optional finishes include a wide range of powder coat colors offering an attractive and durable finish.

Manual pull rope operation with optional chain hoist or electric motor operator

Available in approximately 200 RAL powder coat colors to match the aesthetic and design of your project. This color optional upgrade includes a hardening additive with an attractive, durable finish and easy-to-clean surface.