Product Description
Product Spec Sheet : 
30" x 54" ADC-NB-90 Ship Stair Roof Hatch - Stainless Steel - Bilco
Invest in simple, reliable, and durable ship stair access to rooftops with the 30" x 54" ADC-NB-90 Ship Stair Roof Hatch - Stainless Steel from Access Doors Canada.
Constructed from high-quality stainless steel, the ADC-NB-90 boasts a sturdy, fully welded, and weather-sealed curb, ensuring it can withstand even the harshest conditions—rain, sleet, hail, snow, or scorching sunlight. Experience effortless operation with Type 316 stainless steel hinge pins and powerful compression springs for lift-assisted opening. Automatic hold-open arms enhance convenience, allowing operators to transport tools, equipment, and other materials easily.
The ADC-NB-90 is the perfect solution for frequent ship stair use on your rooftop.
Why Should You Use the 30" x 54" ADC-NB-90?
- Enhanced Ship Stair Integration: The ADC-NB-90 boasts a larger standard opening, creating a more spacious entry point for seamless integration with ship stairs.
- Effortless Rooftop Access: Experience smooth access to rooftops with interior and exterior turn handles. Powerful compression springs and automatic locking arms always ensure effortless opening and secure closure.
- Superior Fire Protection: NB-90 offers a fire-resistant option that complies with UL 790 standards, providing the highest level of fire protection for your rooftop.
- Simplified Installation: The NB-90 features a 3-½" mounting flange and pre-drilled holes for streamlined and secure fastening to roof decks.
- Weatherproof Construction: Permanently adhered EPDM rubber gaskets create a tight seal on the NB-90's cover, keeping the elements out. It offers exceptional resistance to corrosion from harsh weather conditions.
- Structural Reinforcement and Energy Efficiency: The NB-90 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: Durable construction featuring 14-gauge 304 stainless steel for superior corrosion resistance.
- 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: The NB-90 boasts a professional aesthetic with a mill finish on Type 304 stainless steel and electrochemical passivation on welds 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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