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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.

*Note
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"
Features
 Made from 304 Stainless Steel
 Water Condensation Drain
 Designed for Weather Resistance
 Available with Bug Screen (Model SFX-SN)
Applications
 Fresh Air Intake/Exhaust Outlet and Ventilation for Interior and Exterior Locations.
 Homes
 Condominiums
 Apartments
 Ships
 Warehouses
 Commercial Buildings
 Retail Buildings
 Restautants
 Gymnasiums

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

MODEL DUCT SIZE A B C D E F FREE AREA
SFX 4S 4" 3 13/16 6 3/32 5 1/8 3 17/32 1 9/16 3/4 0.04 sq. ft.
SFX 6S 6" 5 23/32 8 1/16 7 1/16 4 17/32 2 9/16 3/4 0.08 sq. ft.
Dimensions are in inches. Product information is Subject to Change Without Notice

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