The 48" x 96" BA-SVSG-B-ST Smoke Vent Security Grille, Bolt-In Flange, Silver Powder Coat provides heavy-duty intrusion deterrence and fall protection over rooftop smoke vent openings.
Built from ½" diameter solid steel rods welded in a 6" x 12" grid, the grille delivers structural strength without sacrificing airflow. The BA-SVSG-B-ST is finished in a weather-resistant powder-coated silver texture, which secures vulnerable roof penetrations while maintaining a full open area for emergency smoke release.
Intrusion Deterrence: A welded 1/2" steel rod grille helps deter unauthorized access through the smoke vent opening.
Open Grid for Function: A 6" x 12" rod spacing maintains the vent opening's airflow and smoke-release function while adding security.
Bolt-In Flange: Bolt-in flange makes installation straightforward at the vent curb.
Durable Steel Build: Heavy steel rod construction stands up to rooftop weather and tampering.
Silver Powder Coat: A silver powder coat finish provides a durable, weather-resistant surface.
Vent-Sized Fit: Sized to common smoke vent openings, so it integrates cleanly with the existing vent.
Not sure which grille configuration fits your smoke vent? Contact our specialists to confirm the roof opening size and whether a drop-in or bolt-in flange is appropriate before ordering.
What Are the Key Product Specifications for the BA-SVSG-B-ST?
Opening Size: 48" x 96"
Material: 1/2" diameter steel rod
Flange: Bolt-In (bolt-in flange)
Finish: Powder coat silver texture.
Mounting Location: Inside face of the smoke vent curb/frame or structural support frame.
Standard Grid Spacing: 6” x 12” center-to-center.
Optional 6-inch by 6-inch, 8-inch by 8-inch, or 12-inch by 12-inch spacing
Please note: Order size is roof opening size.
What Comes Standard and What Can Be Configured?
Every BA-SVSG-B-ST ships with the following as standard:
Welded 1/2" steel rod grille on a 6" x 12" grid
Bolt-in flange for mounting at the vent curb
Factory powder-coat silver texture finish.
Confirm the smoke vent's opening size and flange type at the time of order, so the grille fits the vent correctly. Silver and gray powder coat finishes are available; this model is finished in silver.
Need a different grille size, bar spacing, or flange configuration? Submit your requirements through our custom solutions form.
What to Know About Installation Requirements?
The bolt-in flange is designed to mount inside the smoke vent or to its support structure. Confirm that the ordered grille dimensions match the roof opening and verify the available mounting location before installation. Flange mounting holes and mounting hardware are supplied by others.
Who Specifies BA-SVSG-B-ST and Where Is It Used?
The BA-SVSG-B-ST is typically specified by facility managers, security consultants, roofing contractors, and building owners protecting rooftop smoke vent openings.
Common applications include:
Commercial and industrial roof smoke vents
Warehouses and distribution centers
Schools and institutional buildings
Facilities with rooftop security concerns
Accessible roofs needing vent protection
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Frequently Asked Questions About Smoke Vent Security Grilles
Does the grille block the smoke vent from working?
No. The open 6" x 12" rod grid maintains the vent opening's airflow and smoke-release function while adding a physical security barrier.
What is the difference between drop-in and bolt-in flanges?
A drop-in flange seats on top of the curb underneath the vent flange before the vent is installed. A bolt-in flange mounts to the inside face of the vent frame or support structure, making it the proper choice for existing vents.
What finishes are available?
Silver and gray powder-coat finishes are available. This model ships in silver.
What is the grille made of?
It is built from a 1/2" diameter steel rod welded to a 6" x 12" grid for strength and durability.
Protect Your Rooftop Smoke Vent Openings
Add security and fall protection to your rooftop smoke vent with the 48" x 96" BA-SVSG-B-ST. Its welded steel grid and bolt-in flange provide durable coverage with flexible mounting inside the vent or to its support structure.
Ready to get started? Call us at +1-888-327-5471 or request a quote, or explore our custom-sized access doors for projects requiring non-standard dimensions. Whether you have product questions or need order support, our expert team is here to help every step of the way.
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