| Model: | MD39 |
| Filter: | MD39V,MD39H,MD39CH,MD39CV |
| Depth: | 5½" |
| UL Classified: | 3 Hour Fire Resistance |
| Certifications: | Underwriters Laboratories, Inc.: 555
National Fire Protection Association: 80 & 90A
ICC's International Building Code |
| Orientation: | Vertical or Horizontal |
| Frame Material: | 16 ga. Galvanized Steel |
| Frame Type: | Hat Channel |
| Blade Material: | 16 ga. Galvanized Steel |
| Blade Action: | Parallel |
| Axles: | Square, Plated Solid Steel Stub |
| Bearings: | Oil Impregnated Bronze |
| Linkage: | Jamb |
| Stops: | 18 ga. Galvanized Steel at Head and Sill |
| Jamb Seals: | Stainless Steel |
| Actuator: | Non-Motorized Spring Closure Mechanism |
| Fusible Link: | 165°F |
| Finish: | Mill |
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