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Type 5M Flexible Ducting is a Great Choice for HVAC Systems in Many Commercial Buildings

Type 5M low pressure, flexible ducting is manufactured to meet the highest quality standards in strength, permeability, and fire resistance required in a flexible air duct. An HVAC professional here in the Ft. Lauderdale area can evaluate a project to determine if this product is right for the job.

The outer covering of 5M is flexible aluminum foil and the next inner layer is a fiberglass insulation blanket. The inner layer is aluminized polyester fabric, which serves as a barrier to keep the fiberglass from entering the air stream.

5M flexible ducting comes in a variety of sizes. Inside diameters range from 3 to 20 inches, so there is an appropriate size for every building.

Ft. Lauderdale, FL Air Quality 5M Insulation Features

The noise reduction feature makes it ideal for buildings where workers’ production would be hampered by excessive the noise from the heating, cooling and air circulation system.

The HVAC professional mechanically locks the ends of each 5M section together quickly by use of the duct’s corrosive resistant galvanized steel helix. No adhesives are requires.

The vapor barrier is fire retardant reinforced aluminum material with a permanence rating of 0.05 Perm A.S.T.M.. It also performs well at low temperatures. Specifications list the operating temperature range from -20 to 250 degrees Fahrenheit.

The 5M flexible ducting takes corners easily and no separate joiners are needed. HVAC installers have the experience to lay the corners to avoid kinking and compressing, which would restrict the flow of air.

A HVAC professional knows how to properly perform flexible duct installation to ridged sections, such as registers, to avoid leaks and separations. A professional know the importance of doing the duct work properly from the start in order to pass inspection the first time.


Whereas ridged duct work was common in past decades, almost all duct work is currently done with flexible materials. The cost of flexible ducting is less than ridged ducts, making it more cost effective especially for large buildings.

5M flex class 1 air duct is energy efficient and will not harden with age. If a job requires ducting with a thermal conductance ratings of R4.2, R6 or R8, the HVAC professional may use this product to enhance the building’s performance.


Type 5M flexible class 1 air duct may be the ideal material for your Ft. Lauderdale home's HVAC requirements. It’s noise reduction and energy efficient features make it cost effective for a wide variety of building projects.





Any hold ups regarding your Los Angeles, CA air quality? Call AAA Modern Air at (818) 501-6750 today to care for the health of your home.