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Polyurethane (Polyisocyanurate) Doors

MPI uses a polyisocyanurate slab in place core for our polyurethane style doors. Typically polyurethane is a foamed in place application as the slab form is very brittle and unstable. Polyisocyanurate offers many benefits over it's polyurethane counterpart, such as: stable rigid form, resistance to water and solvents, higher temperature stability, and resistance to burning.

Standards

  • HMMA 867 - Laminated Core Hollow Metal Door
  • ANSI A250.6 - Recommended Practice for Hardware Reinforcing
  • ANSI A250.8/SDI 100 - Specifications for Standard Steel Doors & Frames
  • ANSI A250.10 - Test Procedure & Acceptance Criteria for Prime Painted Steel

Fire Rating

  • No Fire Rating Available

Sound (STC) Rating

  • ASTM E90, ASTM E413, ASTM E1332
  • Consult Tech Data for additional information
  • 18 Gauge (0.042 min) Door
    • STC 30 with Seal Set #N1
    • STC 30 with Seal Set #N2
    • STC 28 with Seal Set #D1
    • STC 29 with Seal Set #D2

Thermal Rating

  • ASTM C1363, ASTM E1423, ASTM EC1199, SDI 113
  • Flush 18 Gauge (0.042 min) Door - R-Value = 2.75, U-Factor = 0.36
  • Flush 16 Gauge (0.053 min) Door - R-Value = 2.66, U-Factor = 0.38

Construction

  • Maximum Size: 3'-6" x 8'-0" Nominal
  • Core
    • Rigid Pre-Formed Closed Cell Polyisocyanurate (polyurethane) Board
    • 2 lb PCF Density Minimum, Conforms to ASTM D2856
    • Core U-Factor = 0.100, R-Value = 10.0
  • Skin Options
    • 18 Gauge (0.042 min) - ANSI A250.8/SDI 100 Level 2 (Standard Duty)
    • 16 Gauge (0.053 min) - ANSI A250.8/SDI 100 Level 3 (Heavy Duty)
    • 14 Gauge (0.067 min) - ANSI A250.8/SDI 100 Level 4 (Extra Heavy Duty)
  • Material Options
    • Cold Rolled Steel - ASTM A1008
    • A60 Galvannealed - ASTM A653
    • G90 Galvanized - ASTM A653 (not recommended)
  • Edge Type Options
    • Bevel Hinge & Lock Edge 1/8" over 2" (standard)
    • Square Edge
  • Edge Seam Options
    • Seamless - Bondo (Standard) - ANSI A250.8/SDI 100 Model 2
    • Seamless - Continuous Welded (Optional) - ANSI A250.8/SDI 100 Model 2
    • Open Seam - Plug Welded  (Optional) - ANSI A250.8/SDI 100 Model 1
  • Top Channel
    • 16 Gauge (0.053 min)
    • Inverted (standard), Flush (optional), Water Tight Seal (optional)
    • Projection Welded
  • Bottom Channel
    • 16 Gauge (0.053 min)
    • Inverted (standard), Flush (optional)
    • Projection Welded
    • Weep Hole Provided
  • Reinforcements
    • Hinge - 7 Gauge (0.167 min)
    • Cylindrical Lock (Govt. 161) - 16 Gauge (0.053 min)
    • Mortise Lock (Govt. 86) - 11 Gauge (0.108 min)
    • Flush Bolts - 11 Gauge (0.108 min)
    • Surface Bolts - 14 Gauge (0.067 min)
    • Surface Closer - 14 Gauge (0.067 min)
    • Surface Holder/Stop - 14 Gauge (0.067 min)
    • Pull Plates/Bars - 14 Gauge (0.067 min)
    • Surface Applied Exit Devices - 14 Gauge (0.067 min)
    • Pivots - 7 Gauge (0.167 min)