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Specifications subject to change with out notice.

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Foil Faced Pipe and Duct Lag

Noise S.T.O.P.™ LAG-Series Flexible Noise Barriers

B-10 Lag/QFA-3
B-10 Lag/QFA-9
B-20 Lag/QFA-9

  • Standard Roll is 54″ Wide × 30′ Long
  • Accepts Matching Lag Tape for Easy Installation
  • Class A (or 1) Flammability Rating Per ASTM E-84
Our acoustical pipe & duct lag flexible noise barriers are a composite material featuring a flexible, reinforced, foil-faced mass loaded vinyl noise barrier bonded to a scrim-faced quilted decoupler/sound absorber. They are used to wrap noisy pipes, ducts, valves and fan housings.
Quilted Fibrerglass Absorber Pipe and Duct Lag Applications:

Typically used to wrap noisy pipes and ducts to block the noise that transmits through the walls of the pipe or duct as air, or other contents, move through it. The quilted fiberglass decoupler improves the performance of the noise barrier and provides sound absorption and thermal insulation around the duct or pipe. Suitable for both indoor and outdoor applications. The reinforced foil exterior readily accepts a matching lag tape for easy installation.


Noise S.T.O.P.™ B-10 Lag/Noise S.T.O.P. QFA-3


DESCRIPTION: 1 lb/sf foil-faced loaded vinyl barrier bonded to a 1″ thick scrim faced quilted fiberglass absorber.
NOMINAL THICKNESS: 1″
ROLL SIZE: 54 ″ Wide × 30′ Long
WEIGHT: 1.2 lb/sf
“R” FACTOR: 4.0
FLAMMABILITY: Class A (or 1) Per ASTM E-84
Smoke Developed – 19.5; Flame Spread – 12.5
TEMPERATURE RANGE: -20°F to +220°F
Sound Transmission Loss – ASTM E-90 & E 413
  125Hz 250Hz 500Hz 1KHz 2KHz 4KHz STC
NS B-10 Lag/NS QFA-3 18 18 23 30 39 46 29

Click PDF iconPDF Iconto download printer friendly file format of product specs. (B-10/QFA-3)


Noise S.T.O.P.™ B-10 Lag/Noise S.T.O.P. QFA-9


DESCRIPTION: 1 lb/sf foil-faced loaded vinyl barrier bonded to a 2″ thick scrim faced quilted fiberglass absorber.
NOMINAL THICKNESS: 2″
STANDARD SIZE: 54″ Wide × 30′ Long
WEIGHT: 1.4 lb/sf
“R” FACTOR: 8.0
FLAMMABILITY: Class A (or 1) Per ASTM E-84
Smoke Developed – 19.5; Flame Spread – 12.5
TEMPERATURE RANGE: -20°F to +350°F
Sound Transmission Loss – ASTM E-90 & E 423
  125Hz 250Hz 500Hz 1KHz 2KHz 4KHz STC
NS B-10 Lag/NS QFA-9 19 20 23 33 44 53 30

Click PDF iconPDF Iconto download printer friendly file format of product specs. (B-10/QFA-9)


Noise S.T.O.P.™ B-20 Lag/Noise S.T.O.P. QFA-9


DESCRIPTION: 2 lb/sf foil-faced loaded vinyl barrier bonded to a 2″ thick, nom. 1.6 lb density quilted fiberglass absorber.
NOMINAL THICKNESS: 2″
STANDARD SIZE: 54″ Wide × 30′ Long
WEIGHT: 2.45 lb/sf
“R” FACTOR: 9.0
FLAMMABILITY: Class A (or 1) Per ASTM E-84
Smoke Developed – 19.5; Flame Spread – 12.5
TEMPERATURE RANGE: -20°F to +260°F
Sound Transmission Loss – ASTM E-90 & E 423
  125Hz 250Hz 500Hz 1KHz 2KHz 4KHz STC
NS B-20 Lag/NS QFA-9 21 24 29 41 54 68 34

Click PDF iconPDF Iconto download printer friendly file format of product specs. (B-20/QFA-9)


Installation Instructions

  1. Acoustical Pipe & Duct Lag Installation Instructions

Acoustical Tests

  1. ASTM E-84 Test – B-10 Lag/NS QFA-3

Material Safety Data Sheet

  1. MSDS – B-10 Lag/NS QFA-3

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