Submittal Sheet (
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Seiho's popular SFX hooded Vent Caps are now available in 304 stainless steel. This model is excellent for exteriors where protection from the elements is necessary and not already carried out by the building design. Insect screens are an option.
No louver manufacturer warrants their louver to prevent water penetration under all possible circumstances of wind and rain.
4" & 6"
Made from 304 Stainless Steel
Water Condensation Drain
Designed for Weather Resistance
Available with Bug Screen (Model SFX-SN)
Fresh Air Intake/Exhaust Outlet and Ventilation for Interior and Exterior Locations.
Vent Cap Installation
SEIHO Vent Caps are designed and manufactured with the architect in mind for every venting need requiredÉunder roof vents where no duct attachments are required, or for specialty vents, as outlets, attached to internal ducts from fan systems.
SEIHO Vent Caps are designed for ease of installation on any exterior surface after all other mechanical and architectural work has been completed. There is no interference with other hidden or exposed items during the construction process, and therefore no cause for delays. Because of the lightweight aluminum construction SEIHO Aluminum Vent Caps are easily installed using only a high grade silicon Caulk. No special tools or techniques required. No adjustments are required.
Vent Cap Selection
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.
Model SFX Dimensions
0.04 sq. ft.
0.08 sq. ft.
Dimensions are in inches. Product information is Subject to Change Without Notice