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Model SX-S
Vent Caps

Model SX Vent Cap

Seiho's popular SX Vent Caps are now available in 304 stainless steel. The SX series of vent caps are perfect for any venting applications such as storage rooms, attics, basements, and bathroom and kitchen exhausts. Insect screens are an option.

No louver manufacturer warrants their louver to prevent water penetration under all possible circumstances of wind and rain.

Material: Stainless Steel
Finish: Polished
Sizes: 4" & 6"


Made from Machined Anodized Aluminum. Water Condensation Drain.
Designed for Weather Resistance. Available with Bug Screen (Model SX-SN).


Fresh Air Intake/Exhaust Outlet and Ventilation for Interior and Exterior Locations.

Custom Color
Homes Ships Retail Buildings
Apartments Gymnasiums Commercial Buildings
Condominiums Warehouses Restautants


Custom Color

1.To determine minimum free area required for vent, divide the required CFM flow by the maximum recommended free area velocity of 750 FPM. Given 125 CFM: Min. free area = 125 CFM/750 FPM = 0.16 sq. ft.

2. From the Dimension table, find the corresponding minimum vent size. Model SXL 10 has 0.19 sq. ft. free area.

3. Verify the static pressure drop through the vent from the Pressure Drop Chart. Velocity of 750 FPM has 0.09 in. w.g. static pressure drop.


Custom Color

The standard finish is clear anodized aluminum. Powder coatings in a variety of colors are available upon request at a nominal charge. Please contact our sales department for assistance and detailed ordering information.

Custom Color


Smoke Patterns




Submittal Sheet  Inch /  Metric
Installation Instruction
High Resolution Picture