Product Description
Product Spec Sheet : 
30" x 54" ADC-NB-50HZ Alum. Ship Stair Roof Hatch - MDA-Approved - Bilco
The 30" x 54" ADC-NB-50HZ Alum. Ship Stair Roof Hatch - MDA-Approved ensures secure and convenient access via a stairway for personnel, tools, and equipment. Constructed from durable, hurricane-rated aluminum, both the cover and curb can withstand extreme weather conditions.
Miami-Dade Notice of Acceptance (NOA) certified: 14.0708.07 and Florida Product Approval (FPA) 15110 guarantee the ADC-NB-50HZ meets the strictest safety standards for high-velocity hurricane zones, including large and small missile impact. Experience less hassle in repairs after storms thanks to its superior protection.
Why Should You Use the 30" x 54" ADC-NB-50HZ?
- Miami-Dade Approved for Hurricane Zones: The ADC-NB-50HZ is certified by the Miami-Dade Building Code Compliance Office and the Florida Building Commission for use in hurricane zones, ensuring it meets the strictest safety standards for high winds and extreme weather.
- Larger Opening for Easy Ship Stair Access: Featuring a larger standard opening than other hatches, the NB-50HZ provides an expanded entry point for safe and convenient access to rooftops via ship stairs.
- Effortless Entry and Secure Access: Experience smooth one-handed access with interior and exterior turn handles. Powerful compression springs and automatic locking arms always ensure effortless opening and secure closure.
- Superior Fire Protection: NB-50C 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-50HZ features a 3-½" mounting flange, overlapping cover design, 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-50HZ's cover, keeping the elements out. Additionally, its aluminum construction offers exceptional resistance to corrosion from harsh weather conditions, including heavy rain.
- Structural Reinforcement and Energy Efficiency: The NB-50HZ 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 reduced energy consumption.
Product Specifications
- Measurements: 30" x 54"
- Material: Lightweight yet robust construction featuring 11-gauge aluminum for the cover and frame.
- 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: Choose between an enclosed two-point spring latch or interior and exterior turn handles with padlock hasps (Please contact our team to specify your preference).
- 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 aluminum provides a clean and professional aesthetic.
- 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.
If you’ve bought one of our products, please feel free to contact us and give us your thoughts about them.
