HR-251 StormMax®


The HR-251 system is an impact-resistant curtain wall designed to accommodate 1-5/16" insulating laminated glass. This system meets the most demanding requirements of the Florida and International Building Codes. The HR-251 system is unique in that it offers a dry glaze option for both large and small missile impact. It combines maximum performance with the versatility of conventional screw spline assembly, thereby providing significant cost savings. StormMax® products can also be glazed with our exclusive StormGlass™ hurricane-resistant glass for maximum defense against wind-borne debris.

  • 2-1/2" sight lines 7-1/2" depth
  • Exterior Glazed Front Set
  • 1-5/16" Insulating Laminated Glazing
  • Screw Spline Fabrication
  • Dry or Wet Glazed Options
  • Thermally Improved
  • 90 Degree Outside Corner Mullion Option
  • Optional Horizontal Allowing Expansion
  • Factory finishes Kynar 500 Hylar 500
  • Finishes meeting all provisions of AAMA 605.2-94 and AAMA 2805-98
  • Factory anodized finishing
  • Can incorporate MSD-375 Entrances
  • Air Infiltration – Passed at 6.24 PSF per TAS-202 and ASTM E 283
  • Static Water – 15 PSF per TAS-202 and ASTM E 331
  • Structural Load – Tested up to +100 / -100 PSF per TAS-202 and ASTM E 330
  • Large & Small Missile Impact and Cycling - Tested up to +100 / -100 PSF per TAS-201,203 and ASTM E 1886
  • Florida Building Code TAS-201, TAS-202,TAS-203
  • ASTM E 1886, E 1996
    CAD DetailsClick to expand [+] / collapse [–]. Click link on right to download file.

    Single Span / Twin SpanPackage icon dwg_StrMax-HR251.zipPDF icon hr251.pdf

    • Elevation Single Span (DWG)
      Elevation Single Span (DWG)
      Elevation Twin Span (DWG)
      Anchors at Single Span - H8145 (DWG)
      Anchors at Twin Span - H81416 (DWG)
      Anchors at Twin Span - H8147 (DWG)
      Corner Mullion Splices - H8149 (DWG)
      SSG-Mullion Splice - H8150 (DWG)
      Steel Anchor at Floor Slab - H8151 (DWG)
      Steel Anchor at Floor Slab - H8152 (DWG)
      Head - H8241 (DWG)
      Head at Twin Span - H8241T (DWG)
      Horizontal - H8242 (DWG)
      Sill - H8243 (DWG)
      Expansion Horizontal - H8244 (DWG)
      Mullion Splices Typical - H8248 (DWG)
      Mullion Spllice Expanded Horizontal - H8249 (DWG)
      Standard Jamb - V8242 (DWG)
      Optional Jamb - V8244 (DWG)
      Standard Mullion with Steel- V8249 (DWG)
      Standard Mullion with Heavy Steel- V8250 (DWG)
      Heavy Mullion - V8252 (DWG)
      90 Degree OSC with Steel- V8253 (DWG)
      SSG Mullion - V8257 (DWG)
      SSG Mull with Steel - V8258 (DWG)

    HR-251 StormMax® SpecificationsMicrosoft Office document icon spec_vist_hr251_web_obe_rev.doc


    • HR-251 StormMax® Installation Manual(PDF)
    • HR-251 StormMax® Sell Sheet(PDF)