This outside-glazed, 2½” wide system is a four-sided captured system, which utilizes concealed fasteners.

Available in a variety of depths, many of our mullions are also available in an optional open back design for ease of installation.  With our “Single-Source Capability,” we can create any curtain wall to fit your needs with custom-designed mullions or snap covers.

• Specifications (pdf)
• Wind Load Charts (pdf)
  • 257 (pdf)
  • 257 with 282 (pdf)
  • Technical Drawings