Choose The Ring Assembly You Need; Now Click on Standard or 4K,
Finally Click on Add To Basket... See Product Discount, and Shipping Options.

We sell all Wireworld Cable, Liberty AV Solutions, and Kinetic Noise Control products, Free shipping on most products over $75.00. If you don't see what you need on this Web Site, Call us at (844)847-8737 or email us at

We are very sorry, but prices on all the Liberty DL-AR Ring Assemblies are going up in price from now till the end of March because of the new Tariffs put on goods being imported from the Orient. So please order soon!

Edit Cart

Kinetics KNM Loaded Limp Mass Barrier 60ft, We Specialize in Home-Acoustics

Kinetics KNM Loaded Limp Mass Barrier 60ft,  We Specialize in Home-Acoustics
    Close Kinetics KNM Loaded Limp Mass Barrier 60ft,  We Specialize in Home-Acoustics


    Kinetics Model KNM Loaded Limp Mass Barrier Vinyl is used for enclosing noise sources, either draped around equipment, suspended between equipment and quiet areas, or lagged to the equipment casing. KNM is highly effective as crosstalk barriers and boosts soundproofing performance of ceilings, walls, and floors.Perfect for noise reduction between floors in Home Theaters, Condos, Duplexes, and Town Houses. KNM Vinyl Barrier Materials can be used effectively to lag piping systems, reducing valves, etc., and are highly effective as crosstalk barriers and septums. Our vinyl barrier materials are available in 1/2 psf to 1 psf (2.5 to 4.9 kg/m2 ) surface weight, in 4.5' wide x 30' and 4.5' wide x 60' long rolls, with acoustical ratings of STC-21 to STC-26.

    KNM Acrylic Seam Tape come in rolls of 1 7/8" x 165' in length and is perfect for taping seams of Mass loaded Vinyl.



    • Pipe and duct noise lagging
    • Ceiling noise barriers
    • Crosstalk barrier
    • Wall and door septums
    • Noise curtain panels and enclosures

    Physical Properties

    Product Weight
    Lbs./Sq. Ft.
    Tensile Strength
    Tear Strength
    Char Length,
    In. (mm)
            KNM-100B       1.00 (4.9)       105 (1.9)       20 (0.4)       0       0       0.2 (5)

    Sound Transmission Loss, dB

    Product Weight
    Sq. Ft. (cm2)
    125 250 500 1000 2000 4000 STC
    KNM-100B   1.00 (929)   13   17   21   28   33   40   26

    Product Descriptions

    KNM-100B 1 PSF (4.9 kg/m2)
    Kinetics limp barrier material, unreinforced and loaded with barium sulphate. Available in black color in 4.5' x 30' and 4.5' x 60' rolls.


    Barrier material shall meet the sound transmission loss and physical properties performance and the flammability standards listed in this brochure.

    Barrier material shall have a minimum continuous operating temperature range from -40�F to 180�F (-40�C to 82.2�C), be resistant to water, oils, weak acids, alkalies, and fungi, and have excellent weather resistance.

    Barrier material to be Model KNM by Kinetics Noise Control, Inc.