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> New 8" x 25 feet silver jacket flexible duct r-4.2
New 8" x 25 feet silver jacket flexible duct r-4.2
8" x 25 feet Silver Jacket Flexible Duct R-4.2 NEW !!
8" Hart & Cooley Insulated Silver
Metalized Jacket Flexible Air Duct
* Silver - Ametalized polyester vapor barrier is constructed by sandwiching fiberglass scrim between layers of polyester to provide an outstanding combination of strength and tear resistance.
* Double-ply Black Polyester Core - Rated pressure per UL181: 10" W.C. positive, "W.C. negative.
* Perm rating of 0.04 (ASTM E96 Method "A")
* Recommended maximum operating pressure: 6" W.C. positive for 12" diameter and under and 4" W.C. positive for 14" diameter and over.
* Rated maximum air velocity: 4000 FPM
* METALIZED JACKET AIR DUCTS. Providing the ultimate in strength and protection, metalized polyester vapor barriers are reinforced with fiberglass scrim to provide high durability and tear resistance. The fiberglass insulation furnishes outstanding thermal protection with R-values of 4.2 and 6.0. The metalized jacket air duct and sleeves are available with either a two-ply black polyester core or triple-ply aluminum foil/polyester laminate cores that encapsulate a high carbon steel wire helix.
* OPERATING TEMPERATURE RANGE
-20 F to 140 F continuous @ max. Pos. pressure
-20 F to 180 F intermittent @ 2" W.C. Pos. pressure
-20 F to 250 F intermittent @ 0.5" W.C. Pos. pressure
* SURFACE BURNING CHARACTERISTICS (Class 1 Air Ducts)
Maximum flame spread: 25
Maximum smoke developed: 50
* OUTSTANDING PERFORMANCE. All Hart & Cooley flexible duct products are performance-tested in accordance with industry standards to ensure reliability and years of service. Our core is tested (in accordance with ADC FD 72-R1) for actual installation static pressure/ temperature performance and meets the ratings specified in our catalog. The vapor barriers are tested for permeation in accordance with ASTM test methods.
