Acoustic Panel Sound Absorbers



KNP-V Groove Face

KNP-V Groove Face


A highly durable, abuse resistant perforated metal acoustic panel. Available with a flat or V-groove surface.

Kinetics Model KNP Acoustic Panel Absorbers are functional and aesthetically pleasing perforated panels which are used to control reverberant noise problems in factories, waste water treatment facilities, pump rooms, equipment yard barrier walls and other factory and enviromental applications. Although primarily intended as an absorber, the panels will act as a barrier when a solid back is added. KNP acoustic panels are also useful as additions to existing metal or concrete barriers to reduce reverberation time and to lower reflected sound.


Kinetics Model KNP Acoustic Panels are excellent sound absorbers over a wide frequency range. Their acoustic properties combined with their appearance and rugged durability make them a perfect choice for controlling reverberant noise problems. KNP Acoustic Panels are suitable for outdoor use and are ideal for installation over existing barrier walls and are excellent in resisting damage from impacts, abrasion, or moisture.

Acoustic Panels can be attached to walls, ceilings, or other surfaces and can be located in a manner to achieve an aesthetically pleasing pattern.

They are available with optional rear backing to increase their transmission loss and be used as a barrier. In addition, KNP Acoustic Panels can be faced with perforated material on both sides and used as hanging absorptive baffles.

For optimum performance, panel selection and spacing should be done by a professional based on elevation of existing room acoustics and desired results.

Acoustical Performance

Sound Absorption per ASTM C-423, Type A Mounting
Frequency, Hz 125 250 500 1000 2000 4000 NRC
Absorption Coefficient 0.22 0.77 1.12 1.00 0.78 0.57 0.90

Note: Stand off brackets (optional) will increase sound absorption.

Photo Gallery

Standard Dimensions

Model KNP and KNP-V Dimensions


Composition: 20 or 22 gauge perforated galvanized steel or 0.040 perforated aluminum; 2.5 PCF mineral fiber absorber in a 2.0 mil heat sealed black PVC bag.

Fire Test Data: Class A per ASTM E84

Sizes and Tolerances:
Model KNP, 2" thick Flat Face
Standard sizes up to 42" wide x 120" high or 114" wide x 48" high
Special order up to 54" wide x 144" high or 138" wide x 60" high
Model KNP-V, 2" thick V-Groove Face
Standard sizes up to 36" wide x 120" high or 96" wide x 48" high
Special order up to 48" wide x 144" high or 132" wide x 60" high
(V-Grooves run vertically)

Tolerances: Models KNP and KNP-V panels are built to plus or minus 1/8 inch tolerances for length, width and squareness (Diagonal measurement).

Mounting: Z-Clips (top), L-Clips (bottom) standard
Optional: Stand-off brackets or J - Channel (bottom), Z-channel (top)

Industrial and Environmental

Industrial Noise and Vibration Environmental Noise Control