Johns Manville Whispertone® Wallboard is a raw acoustical fiberglass board we use as a sound absorbing core for our fabric wrapped acoustical panels. We can manufacture panels for you using many of the Guilford of Maine fabrics listed on our website. Just let us know which fabric you want and how many panels you require. Should you wish to build your own panels, you may also purchase this acoustical board, any of our panel fabrics and mounting hardware.
Manufactured from fine, rotary-process, boorsilicate glass fibers bonded with a special thermosetting resin, Whispertone® produces a structurally rigid board-type insulation. The top surface is smooth and uniform in color. The high tensile fibers resist settling, breakdown or sagging from vibration. The countless air spaces in Whispertone® Wallboard create effective sound absorption as well as thermal properties. Perceived noise from air movement and mechanical equipment is noticeably reduced. It is a widely used due to its excellent thermal and acoustical properties.
Technical Information for Whispertone® Wallboard:
Size: Up to 4′ x 10′
Thickness: 1″ & 2″ (Standard)
Density: 6 pound per cubic foot acoustical fiberglass substrate
Finish: Scrim Face
Intended Use: Raw sound absorbing fiberglass core used for constructing acoustic panels
Class 1 or A per ASTM E84
Meets UL 723 and CAN/ULC S102-M88
Meets NFPA 90A and 90B
Tolerance: +/- 1/8″
Edge Detail: Options for Square, Bevel, or Mitered Edge
Edge Construction: Natural or Chemically Hardened (Hardened edges provide additional edge protection and a crisper edge appearance.)
NRC: 1″ (0.75) 2″ (1.00)
Sound Absorption (Hz)*
*Test results provided are for raw boards only with no mounting provisions. Mounting Hardware on finished acoustical panels create a slight air gap, which increases absorption.
WARNING: This product contains a chemical known to the State of California to cause cancer and/or reproductive harm, and birth defects or other reproductive harm. For more information: www.P65Warnings.ca.gov.