Product Description
Product Spec Sheet: 
48" x 48" BAC-RVFV Double Door Domed Smoke Vent
In a fire emergency, thick smoke and toxic fumes can spread rapidly, reducing visibility, making evacuation difficult, and increasing the risk of suffocation. Without an effective ventilation system, heat buildup can also accelerate fire damage.
The 48" x 48" RVFV Double-Door Domed Smoke Vent automatically opens to release smoke and heat, improving air quality and visibility for faster evacuations.
Its double-leaf design creates a larger opening, allowing smoke to escape more quickly and preventing dangerous buildup inside the building. The vent also comes with shock absorbers and torsion springs, ensuring smooth, controlled opening even under pressure.
Why Choose the 48" x 48" BAC-RVFV?
- Maximized Smoke Ventilation: Its double-leaf design creates a larger opening, allowing smoke and heat to escape quickly, reducing fire intensity and improving visibility for safer evacuations.
- Automatic Fire Response: The UL 793-listed 165°F fusible link ensures the vent opens at the right moment, eliminating the need for manual operation during emergencies.
- Enhanced Energy Efficiency: Acrylic domes allow natural daylight into the building, reducing the reliance on artificial lighting and lowering energy costs.
- Durable & Weather-Resistant: The 14-gauge galvanneal steel curb and aluminum cover provide long-lasting performance, withstanding harsh weather and ensuring structural integrity.
- Secure & Airtight Seal: 48" x 48" BAC-RVFV has a bulb neoprene gasket which prevents air leaks and moisture infiltration, maintaining indoor conditions and protecting building materials from potential damage.
Looking to improve rooftop access? Smoke vents keep the air clear, but a properly installed roof hatch makes getting there easy. Read our blog on how to install a roof hatch for a simple step-by-step guide!
Product Specifications
- Dimensions: 48" x 48"
- Material: 14-gauge galvanneal steel curb, extruded aluminum cover
- Finish: Silver-textured powder coat paint
- Domes: Clear over white acrylic domes
- Gasketing: Bulb neoprene door seal
- Insulation: 1" polyisocyanurate (R-6) in curb and cover
- Hinges: Heavy-duty aluminum hinge with bolt pin
- Hold-Open Arm: Clear zinc-plated steel arm with red plastic coating
- Latching Mechanism: Fully enclosed automatic pull-release latch at each end
- Fusible Link: 165°F UL 793-listed fusible link
- Spring Mechanism: Torsion spring drive system with shock absorbers
- Roof Opening: Matches order size
Installation Instructions
- Secure the Unit: Fasten the vent’s curb to the roof structure using appropriate anchors or fasteners, to ensure a stable and secure installation.
- Position the Smoke Vent: Lift and place the 48" x 48" BAC-RVFV over the prepared roof opening. Align the 14-gauge galvanneal steel curb properly with the opening for a secure fit.
- Prepare the Roof Opening: Cut an opening that matches the ordered size. Ensure the opening is level and properly framed for support.
Note: The necessary anchors or fasteners for securing the vent are not provided with the 48" x 48" BAC-RVFV unit. Installers need to use appropriate fasteners based on the roof type and building specifications. - Test the Operation: Manually release the hold-open arm to check that the doors open smoothly and without obstruction. Ensure the 165°F UL 793-listed fusible link is properly installed so the vent will activate automatically in a fire.
Ready to upgrade your building’s ventilation? The 48" x 48" BAC-RVFV Double-Door Domed Smoke Vent quickly clears smoke, enhances airflow, and brings in natural light.
Also, if you’re looking for a secure and convenient way to reach the rooftop, check out our BAC-GS roof hatch, which offers smooth, one-hand operation with compression spring operators that make access effortless.
Best Access Doors Canada has the access solutions you need. Explore our products and see why professionals trust our quality. You can also take advantage of our easy credit application for a smoother purchasing process. Browse our best sellers to find the perfect fit for your project today!