This Imperial Duct Insulation Sleeve works as an energy-efficient insulation blanket suitable for heating, ventilation, and air conditioning systems. Specifically designed to insulate rigid or semi-rigid round ducts, it is an excellent method for reducing heat or cool loss and condensation build-up. The sleeve is made of a thick fiberglass insulation blanket enclosed in a strong, fiberglass-reinforced silver metalized outer jacket. The insulation sleeve measures 4-in x 10-ft, meets UL 181 standards for Class 1 Air Duct, and features an energy-efficient insulation R-value of 4.2. Check your local building codes prior to installation.
Construction Materials
Made of a thick glass fiber insulating blanket, jacketed
by a fiberglass reinforced metalized vapor barrier.
R-Value
R-4.2, R-8.0
Vapor Barrier Permeance
0.04 perm (2.3 ng / s.m².Pa)
Available Diameters
3, 4, 5, 6, 7, 8, 10, 12 inches
Standard Lengths
10 feet
Surface Burning Characteristics
Maximum Flame Spread = 25
Maximum Smoke Development = 50
| Item No. | Description |
| JA-0310-1 | 3" x 10' Air Duct Ins Sleeve/4.2 |
| JA-0410-1 | 4" x 10' Air Duct Ins Sleeve/4.2 |
| JA-0510-1 | 5" x 10' Air Duct Ins Sleeve/4.2 |
| JA-0610-1 | 6" x 10' Air Duct Ins Sleeve/4.2 |
| JA-0710-1 | 7" x 10' Air Duct Ins Sleeve/4.2 |
| JA-0810-1 | 8" x 10' Air Duct Ins Sleeve/4.2 |
| JA-1010-1 | 10" x 10' Air Duct Ins Sleeve/4.2 |
| JA-1210-1 | 12" x 10' Air Duct Ins Sleeve/4.2 |
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