• IR 501UT - Isometric
  • IR 501UT - Section Cut
  • IR 501UT - Intermediate Horizontal
  • IR 501UT- Sill
  • IR 501UT - Mullion
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IR 501UT Framing

  • 2-3/4" (69.9mm) sightline
  • 5" (127mm) depth
  • Ultra thermal performance
  • Center glazed
  • Blast mitigation, hurricane resistance

Product Features

IR 501UT  (Ultra Thermal) framing system combines a dual IsoLock® thermal break with insulating impact resistant glazing to provide the ultimate in occupant safety and comfort.

Key Features Include:
  • IR 501UT is 5" (127) deep and has a 2-3/4" (69.9) sightline
    {Expansion mullions have a 3" (76.2) sightline}
  • Screw Spline fabrication
  • Dual IsoLock® lanced pour and debridge thermal break
  • Center glazed
  • Outside glazed
  • Permanodic® anodized finishes in 7 choices
  • Painted finishes in standard and custom choice
 
Optional Features:
  • Integrated entrance framing
    350 IR Medium Stile - single or pairs of entrances
  • Strap anchor at head and jamb
  • Acoustical rating per AAMA 1801 and ASTM E 1425
  • Project specific U-Factor (see thermal charts)
 
Product Applications:
  • Impact resistant
  • Storefront, ribbon window or punched opening
  • Low to mid-rise
  • Single span
 
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