Bilco Type DSH Automatic Smoke Vent – Double Leaf Steel Smoke Hatch
Description
Enhance fire safety measures with the Bilco Type DSH Double Leaf Automatic Smoke Vent, engineered to facilitate the rapid release of smoke, heat, and gases during a fire. This vent is ideal for large commercial spaces such as warehouses and manufacturing facilities, providing an economical solution for effective smoke ventilation.
Features
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Thermolatch® II Release Mechanism: Ensures reliable operation by automatically releasing vent covers upon the melting of a UL-listed 165°F (74°C) fusible link.
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Durable Construction: Available in 14-gauge galvannealed steel or 11-gauge aluminum, offering long-lasting performance.
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Efficient Operation: Equipped with powerful gas spring operators to open covers in various conditions, including snow and wind, with integral dampers to ensure controlled opening.
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Weather-Resistant Design: Fully insulated and gasketed for weather-tightness, preventing leakage and enhancing energy efficiency.
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Compliance and Safety: UL-listed and complies with UL 793 and UL 790 Class A (burning brand test) standards, ensuring adherence to safety regulations.
Specs
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Material Options:
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Steel: 14-gauge (2 mm) galvannealed steel for both cover and frame.
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Aluminum is also available:
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Cover Design: Brakeformed, hollow-metal with 1" (25 mm) concealed fiberglass insulation, featuring a 3" (76 mm) beaded, overlapping flange, fully welded at corners, and internally reinforced for a 40 psf (195 kg/m²) live load.
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Curb: 12" (305 mm) in height with integral cap flashing, 1" (25 mm) fiberboard insulation, fully welded at corners, and a 3-1/2" (89 mm) mounting flange with 7/16" (11 mm) holes for securing the frame to the roof deck.
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Gasket: Extruded EPDM rubber gasket permanently adhered to the curb to ensure a tight seal.
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Hinges: Heavy-duty pintle hinges with 3/8" (9 mm) type 316 stainless steel hinge pins for robust support.
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Latch: Positive hold/release mechanism controlled by a single UL-listed 165°F (74°C) fusible link, designed to hold the covers closed against a 90 psf (438 kg/m²) wind uplift force. Includes interior and exterior pull release cables for manual operation.
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Operation: High-performance gas springs open covers against a 10 psf (49 kg/m²) snow/wind load and lock them in the open position. Gas springs have integral dampers to ensure a controlled rate of cover opening and are tested for a cyclic durability of 50,000 cycles.
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Finish Options:
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Steel: Alkyd base red oxide primer.
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Aluminum: Mill finish.
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