* Free Freight Terms Do Not Apply *
Price: $1,460.00
Item #BILCO-NB-20
Write a review!
Description
The Bilco NB-20 Roof Hatch provides a 30 inch by 54 inch opening designed for ship stair access, offering more clearance than ladder access hatches. Its insulated cover and curb improve energy efficiency, while fully welded corners and an EPDM gasket ensure weather-tight performance. Constructed from heavy-gauge galvanized steel, aluminum, or stainless steel, the NB-20 is built for demanding commercial applications. Compression springs provide easy, one-hand operation, and the automatic hold-open arm ensures safety during use.
Key Features:
-
30x54 opening designed for ship stair access
-
Insulated cover and curb with approximately R-6 thermal value
-
Heavy-gauge galvanized steel, aluminum, or stainless steel construction
-
EPDM gasket and welded corners for weather tightness
-
Compression springs for lift assistance and smooth operation
-
Automatic hold-open arm for safe access
-
Slam latch with inside and outside handles, padlock provisions
Specifications
- Opening size: 30 inches x 54 inches
-
Curb height: 12 inches standard
-
Cover insulation: 1 inch polyisocyanurate, approx. R-6
-
Curb insulation: 1 inch polyisocyanurate
-
Material options: 14-gauge galvanized steel, 11-gauge aluminum, 14-gauge stainless steel
-
Hardware: stainless steel hinge pins, compression springs, automatic hold-open arm, slam latch
-
Finish: mill finish aluminum, hot-dip galvanized steel, or factory powder coat
-
Live load: 40 psf with 50 psf wind uplift
How To
- Prepare a roof opening of 30 inches by 54 inches with structural curb support.
-
Place the NB-20 hatch over the opening, aligning the mounting flange and cap flashing.
-
Fasten the hatch through the flange using appropriate fasteners.
-
Install hardware including compression spring operators, hinges, and hold-open arm.
-
Test the hatch for smooth lift operation, latch security, and gasket seal.
FAQs
Q: What applications is the NB-20 best suited for?
A: The NB-20 is designed for ship stair access, offering a larger opening than ladder-access hatches.
Q: Is the NB-20 insulated?
A: Yes, it includes 1 inch polyisocyanurate insulation in both the cover and curb.
Q: What is the live load rating of the NB-20?
A: The hatch supports 40 psf live load with 50 psf wind uplift.
Q: Can the NB-20 be padlocked?
A: Yes, the slam latch includes provisions for a padlock.
Reviews (0) • Write a review!
This product has no reviews yet. Write a review!
Bilco S-50TB - Thermally Broken Aluminum Roof Hatch, 36" x...
Ladder Access
Price: $1,545.00
Availability: In Stock
Usually ships within 1-2 Business Days
The Bilco S-50TB is a 36-inch by 30-inch thermally broken roof hatch designed for ladder access. It features an aluminum cover and frame, with 3″ (75 mm) polyisocyanurate insulation in the cover and curb providing R-20 performance. The hatch includes a beaded overlapping flange, fully welded corners, EPDM gasket, stainless steel pintle hinges, slam latches with interior/exterior handles and padlock hasps, compression spring lift assistance, and an automatic hold-open arm. Key Features:...
Bilco NB-50TB - Thermally Broken Roof Hatch, 30" x 54"
Ship Stair Access
Price: $1,893.00
Availability: In Stock
Usually ships within 1-2 Business Days
The Bilco NB-50TB is a thermally broken roof hatch sized 30-inch by 54-inch designed for ship stair access. It uses aluminum cover and frame, both insulated with approximately 3-inch (75 mm) polyisocyanurate for R-18 thermal performance. The hatch features an extruded EPDM gasket permanently adhered to the cover, heavy-duty pintle hinges with stainless steel hinge pins, a slam latch with interior/exterior handles and padlock hasps, lift assistance via compression spring operators enclosed in...
Bilco NB-50VM - Aluminum VersaMount Access Hatch, 54" x...
For Ship Stair Access
Price: $1,975.00
Availability: In Stock
Usually ships within 1-2 Business Days
The Bilco NB-50VM is a 30-inch by 54-inch aluminum VersaMount roof hatch designed to replace damaged hatches without removing roofing membrane. It has a low-profile curb with built-in flange and apron, an anchor clip system, and a fully insulated cover and curb with EPDM gasket. Lift is assisted by compression springs, and it includes an automatic hold-open arm, slam latch with interior and exterior handles, padlock hasps, and is constructed with welded corners and weather-tight build. Key...
Bilco NB-20VM - Steel VersaMount Access Hatch, 30" x 54"
For Ship Stair Access
Price: $1,875.00
Availability: In Stock
Usually ships within 1-2 Business Days
The Bilco NB-20VM is a 30-inch by 54-inch VersaMount roof hatch designed for ship stair access. It is intended for retrofit over an existing curb, eliminating the need to remove roofing membrane. The hatch uses galvanized steel construction with a low-profile curb, built-in apron, anchor clip system, 1″ (25 mm) concealed fiberglass insulation in cover and curb, overlapping flange, fully welded corners, EPDM gasket, compression spring operators, slam latch with interior/exterior handles, and a...