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)
