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All Corporate Acoustic Panels consist of high quality, smooth glass fibre cores with resin hardened edges resulting in very light weight, non-warpable sound absorptive substrates to which approved fabrics are adhesively bonded to minimize the possibility of future sagging.  This construction does not require any interior wood or plastic frames which can "telegraph" through the fabric covering.

Acoustical Ratings

Sound Absorption Coefficients (in sabins) versus Frequencies (in hertz)
 ASTM E 90-81 and ASTM E 413-73, C423-81A, on Type A Mountings

Core Thickness inches)
125 Hz
250 Hz
500 Hz
1000 Hz
2000 Hz
4000 Hz
N.R.C.
0.5
0.12
0.14
0.45
0.90
1.04
1.00
0.65
1.0
0.17
0.41
0.93
1.15
1.04
1.04
0.90
1.125
0.08
0.63
0.97
1.04
0.95
0.96
0.90
2.0
0.37
0.95
1.15
1.08
1.06
1.00
1.05

Sound absorption is measured in Sabins.  1.0 Sabin is equivalent to 100 percent of the sound energy being absorbed.  For example,  the above sound absorption rating for a 1.0 inch thick panel core at a frequency of
500 Hz is 0.45 Sabins,  or 45 percent absorption of sound energy at that frequency.  Although it is theoretically incorrect to exceed 1.0 sabins,  or 100 percent  in absorption,  some of the above ratings do because of  "edge defraction".

N.R.C. or Noise Reduction Coefficient is only a relative indicator of  a material's sound absorption.  Acoustical consultants also carefully considers the absorption coefficients ranging between 125 and 4000 Hz.

The above ratings are predicated on covering panels with a open weave fabrics similar to Guilford of Maine FR701.   Avoid very  tightly woven fabrics which may restrict  transference of sound energies at  particular frequencies into the core material.

Panel Sizes are available up to 60" X 120".
Curved Panels fabricated for concave surfaces.
Tackable - Impact Resistant Panels are fabricated utilizing high density,  sound transparent  substrates.
Edge Details:
 

Square
Bevel
Radius

Edge detailing,  such as bevel,  are more "forgiving' than square edges  under most lighting conditions. Moreover,  butted,  square edge panels are impractical to replace because original fabric dye lots must be matched.

Fabric Finishes - Guilford of Maine FR701 fabrics & acceptable customer's own material (C.O.M.).

Some fabric textures and colors (especially light colors) may magnify minor core defects depending on the lighting that will exist in the installation location.  Always carefully verify appearance with a large mock-up panel covered with the selected fabric.

Fire Rating - Glass fibre cores and Guilford of Maine's fabrics have  Class 'A' Flame Spread Ratings  of  25,  or less.  Recommend that other specified fabrics comply with local fire code.

Toxicity - Our resin hardener is water based and odor free. Beware of petroleum based resins !!!

Installation Techniques -Adhesively applied  panels (which are still removable) usually result in superior installations than those with mechanical or  fabric  fasteners.   However,  mechanical and fabric fasteners are available if  otherwise still requested. Magnets are available for very  quick and effective applications to metal partitions.

Drawings & Dimensions -Detailed shop drawings and accurate field dimensions are strongly recommended.
If  pre-arranged,  this service will be provided when ever  possible...as well as competent installation supervision.

Approval For Fabrication - requires purchaser's written acceptance of project's mock-up panels covered with the selected fabric and approval of shop drawings.

Suggested Specifications - Please contact us, for suggested panel and installation specifications applicable to your project.

Custom Requirements -  Furnish us with details of any custom requirements.