Data Sheet

Whisper Acoustic Panel Fabric Data Sheet

Color Chart

Guilford of Maine Whisper Fabric Color Chart

Installation Guide Z-Clip

Installation Guide for Fabric Wrapped Panels with Z-clips

Installation Guide Rotofast Snap-On

Installation Guide for Fabric Wrapped Panel with Rotofast Snap-On

Cleaning Guide

Cleaning Instructions for Guilford of Maine Acoustic Fabrics

  1. Are the Whisper Acoustic Panels available in custom sizes, shapes and colors?
  2. Yes, of course! These fabric wrapped panels are available in custom sizes up to four foot by ten foot (4’x10′). They can be cut to fit angled ceilings or create custom designs. Additionally, a full selection of Guilford of Maine fabrics is available to accommodate any range of design requirements. Over the years, many other fabrics have been applied to our panels to satisfy construction project specifications by designers and architects. If your project scope requires something beyond that of a standard panel, we can custom tailor our acoustical panels to meet your needs.

    If you require a custom panel configuration, please Contact Us via our contact form or call us with your request.


  3. How do I get an estimate for my custom project?
  4. Contact Us via our contact form or call us with your request. If you need a quotation, please provide the following information:

    1. A list of Quantities & Sizes required.
    2. Fabric color selection, if known.
    3. Edge design if other than square. Please also specify if you want them natural or resin hardened (provides edge protection).
    4. Mounting Hardware. Impaling clips are included in the price. If using Z-clips, please specify the width and height of the panel. This is important for hardware orientation.
    5. Shipping address (Let us know if this is a commercial or residential address).
  5. How do I request a sample of this material?
  6. Samples of the Whisper acoustical wall panels are available upon request and are free of charge.

    Contact Us via our contact form or call us with your request.

  7. How is my order shipped?
  8. Typically each order is packed on a skid and shipped via LTL (less than truck load) freight truck. If your facility is unable to accept freight shipments, you may wish to consider ordering panels sizes that are 2’x4′ or smaller. Depending on the order size, these can often ship by a parcel service like UPS or FedEx.

    When requesting a quotation for panels, please let us know if the shipping location is commercial or residential and if you will need any special freight services like a lift gate or delivery appointment.

  9. Are these panels available from stock?
  10. Our Whisper fabric wrapped panels are custom and made to order with your choice of color, edge design, size and mounting hardware. Typically lead times can range between 2-4 weeks depending on current manufacturing loads.

Whisper Acoustic Panel


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Our Whisper Acoustic Panel combines a highly-effective sound absorbing core with a pleasurable pallet of tranquil and saturated color tones. Reduce excessive reverberation and echo using this fantastic line of fabric wrapped panels. Create a decorative environment that not only looks good, but also sounds good.

The Whisper fabric wrapped acoustic panels are manufactured in the USA. The dense fiberglass core is specifically designed for use with acoustical panels to provide superior sound absorption. This sound absorbing core is wrapped with any number of attractive colors from the Guilford of Maine Whisper series.

Our Whisper acoustic panels are configurable in a range of sizes and thickness with different edge style designs and various mounting methods. Choose from any of these options to design the perfect panel configuration for your application. Use these panels to absorb reverberation to improve speech intelligibility and create a comfortable space that looks and sounds great.

Note: While we make every attempt to accurately display fabrics, colors may vary depending on your screen settings. Before ordering, please request a fabric sample to ensure color and texture. Colors may vary between dye lots.


Houses of Worship, Teleconferencing and Videoconferencing Rooms, Broadcast and Recording Studios, Multi-Purpose Rooms, Offices, Auditoriums or anywhere that needs high quality sound absorption.


  • Elegant aesthetic
  • Variety of sizes and colors
  • Reduce reverberation and echo
  • Improves speech intelligibility
  • Manufactured in the USA

Technical Information for Whisper Acoustic Panel:

  • Sizes: Choose from standard or custom sizes up to 4′ x 10′
  • Thickness: 1″ & 2″ (Standard) | 1/2″ up to 4″ available (custom priced)
  • Tolerance: +/- 1/8″
  • Intended Use: Sound absorbing wall panels for interior spaces to reduce echo and reverberation
  • Fire Rating: Class 1 or A per ASTM E84
  • Density: 6-7 pound per cubic foot acoustical fiberglass substrate
  • Fabric Finish: Guilford of Maine Whisper (other fabrics available as specified)
  • Edge Detail: Options for Square, Bevel, Radius, or Mitered Edge
  • Edge Construction: Natural or Chemically Hardened (Hardened edges provide additional edge protection and a crisper edge appearance.)
  • Mounting options for walls: Impaling clips (Default), Mechanical Z-clips, Rotofast Direct Mount Anchors (drywall only)
  • NRC: 1″ (0.85) 2″ (1.10)
Sound Absorption (Hz)

For more information on our Whisper Acoustic Panel,
call us at 800.782.5742 or contact our sales department.