Hercules manufactures a semi rigid and lightweight non-insulated air duct, Alflx is manufactured by using an aluminum strip which is spirally wound and mechanically joined together forming an air tight and leakproof seam.
Brand Name
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Hercules Industries
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Diameter
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4 Inch
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Item Name
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Flexible Duct
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Length
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8 feet
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Material
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3003 Aluminum
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Model
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ALFLX
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Temperature Rating
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-100 to 435 deg F
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Type
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Semi-Rigid, Non-Insulated
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Velocity
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5000 fpm
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- 1-1/2 Inch fiberglass wrap x 0.75 lb density, 1-1/2 Inch thermal/acoustic flame-attenuated glass Insulation
- Vapor barrier - metalized and clear polyester film laminated with a reinforcing fiberglass nylon string encapsulated (silver)
- Light weight
- Easy to cut and install
- Very flexible-can be bent, straightened and rebent to accommodate any installation
- Can be oval sized easily by hand to accept any type outlet or collar
- Very good air handling properties with minimal air leakage and low friction loss
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Specification Sheet
https://cdn-assets.unilogcorp.com/ASSETS-H/DOCUMENTS/ITEMS/EN/Uni_Geary19378_Spec.pdf