Specialist in acoustic materials

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    Extensive product range, customisation possible

    Fibers & Foams

    Whisper Box Mono

    Sound-insulating enclosure for outdoor units of heat pumps and air conditioners

    New product

    Fluisterbox Mono - Geluidsisolerende omkasting - Huis

    At the moment, you cannot order this product through our webshop. Please contact us by requesting a quote or asking a question using the buttons below.

    • Effective noise reduction

    • Ready to use, easy to install

    • Sustainably produced with recycled materials


    The Whisper Box Mono is a ready-made soundproof enclosure that significantly reduces the noise emission from outdoor units of heat pumps and air conditioners. Thanks to its thoughtful design, the sound is effectively dampened, while the performance of the unit is maintained. The Whisperbox Mono halves the audible noise level and is suitable for both freestanding placement and wall mounting. Moreover, the product is manufactured in the Netherlands from 95% recycled materials, contributing to a quieter and more sustainable living environment.

    • Effective noise reduction 
    • Ready to use, easy to install 
    • Sustainably produced with recycled materials 
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    Product sheet

    Whisper Box Mono

    Sound-insulating enclosure for outdoor units of heat pumps and air conditioners

    New product

    At the moment, you cannot order this product through our webshop. Please contact us by requesting a quote or asking a question using the buttons below.

    • Effective noise reduction

    • Ready to use, easy to install

    • Sustainably produced with recycled materials