Product Description
Product Spec Sheet : 
30" x 54" ADC-NB-20C Security Roof Hatch - Steel - Bilco
The 30" x 54" ADC-NB-20C Security Roof Hatch - Steel from Access Doors Canada offers a secure solution for ship stair access. Constructed from heavy-gauge steel with robust building practices, the ADC-NB-20C is built to resist tampering, vandalism, and even forceful entry attempts.
Designed by Bilco for frequent use, the hatch features Type 316 stainless steel hinge pins for smooth operation and powerful compression springs that enable effortless lift-assisted opening. Automatic hold-open arms further enhance convenience during operation, allowing for easy transport of tools, equipment, and materials.
The ADC-NB-20C boasts a sturdy, fully welded, and weather-sealed curb, ensuring it can endure any weather condition, from rain and snow to hail and scorching sun rays.
Why Should You Use the 30" x 54" ADC-NB-20C?
- Unmatched Security: Constructed from robust 14-gauge steel, the ADC-NB-20C offers exceptional resistance to tampering, making it ideal for high-security applications in banks, pharmaceutical buildings, and correctional facilities.
- Effortless Entry and Secure Access: The NB-20C prioritizes user experience. Interior and exterior turn handles paired with powerful compression springs and automatic locking arms ensure smooth, one-handed operation and secure access every time.
- Superior Fire Resistance: The NB-20C is built with tamper-resistant heavy-gauge steel and boasts a Class A UL 790 rating, providing the highest level of fire protection for your rooftop.
- Simplified Installation: NB-20C streamlines installation with a 3-½" mounting flange and pre-drilled holes, allowing for secure fastening to various roof decks.
- Weatherproof Construction: Permanently adhered EPDM rubber gaskets create a tight seal on the NB-20C's cover, keeping the elements out and protecting your space. It offers exceptional resistance to corrosion from harsh weather conditions.
- Structural Reinforcement and Energy Efficiency: The NB-20C provides live-load support of up to 40 lbs./sq. ft. and incorporates 1" thick fiberboard insulation within its curb, reinforced by 1" thick fiberglass within its cover, for enhanced thermal resistance and excellent insulation.
Product Specifications
- Measurements: 30" x 54"
- Material: High-security 14-gauge 304 stainless steel construction offers exceptional resistance to tampering.
- Cover: Brake-formed hollow metal design incorporates 1" concealed fiberglass insulation for superior thermal and acoustic dampening. The cover features a 3" beaded, overlapping flange, fully welded at the corners for strength, and is internally reinforced to withstand heavy loads (40 lbs./sq. ft. live load).
- Curb: The 12"-high curb with integrated cap flashing ensures a watertight seal. It includes 1" fiberboard insulation for improved thermal performance and a 3-½" mounting flange with pre-drilled 7/16" holes for streamlined installation.
- Gasket: An extruded EPDM rubber gasket permanently adhered to the cover creates a secure seal.
- Hinges: Heavy-duty pintle hinges with 3/8" Type 316 stainless steel hinge pins ensure smooth operation and superior corrosion resistance.
- Latch: Slam latch with exterior and interior turn handles and padlock hasps provides convenient access options.
- Lift-Assistance: Compression spring operators enclosed in telescopic tubes offer controlled opening. An automatic hold-open arm with grip handle release allows for ease of use.
- Finish: Mill finish Type 304 stainless steel with an electrochemically passivated weld treatment for enhanced corrosion resistance.
- Hardware: Compression spring tubes: Aluminum-engineered composite for lightweight construction with steel compression springs packed in grease for long-lasting performance. Hinges: Type 316 Stainless steel for superior corrosion resistance. Other Hardware: Zinc-plated for added durability.
At Access Doors Canada, we take pride in ensuring our customers are fully satisfied with our products. Just choose the size and customization that fits your construction needs. Connect with us to request a quote or call us at (800) 679-3405. Our team of experts is ready to answer your questions.
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