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MRSP $17.95 AcoustiPack™ EXTRA - Foam Blocks (APExtB)The new AcoustiPack™ EXTRA Foam Blocks pack contains 3 acoustic foam blocks. These can be used inside any vacant drive bays to help increase the absorption of unwanted sound energy. Once installed, the foam blocks also help to reduce the internal air volume inside your PC or server case, which in turn may improve airflow velocity and the cooling performance. The blocks are made from profession-grade dense acoustic foam, which is certified to UL94-HF1 fire rating. The foam is especially effective at absorbing sound at higher-frequency, such as HDD whine, or high-pitch noise from motherboard components. The foam is black, and flexible enough to squeeze into empty 5¼ inch or 3½ inch drive bays to pressure-fit. 
Overview - AcoustiPack™ EXTRA Foam BlocksProduct Code: APExtB
This pack is suitable for:   Suitable for any PC with a free 3½" drive bay, and/or a free 5¼" drive bay. NOTE: The blocks must not be used directly against warm components - always allow adequate circulation around adjacent components such as HDDs. Companion Products 
You may like to consider this product with AcoustiPack™ LITE (APL) or AcoustiPack™ ULTIMATE (APU). The EXTRA Foam Blocks product increases the internal surface area of an acoustic materials kit, and helps to absorb extra acoustic energy inside a PC or server case. Material FeaturesThese soundproofing materials have been designed to achieve maximum acoustic attenuation over a broad frequency range: High Transmission Loss High transmission loss is the composite material’s ability to impede airborne noise. High Noise Reduction Coefficients High noise reduction coefficients is the composite material’s ability to absorb airborne sound energy with minimal reflections. Damping Damping is the composite material’s ability to attenuate structure-borne vibration on metals and other substrates thereby reducing reradiated noise. 
Material Non-FlammabilityThe individual components of the multi-layer composites used in AcoustiPack™ sound-proofing kits are certified and UL-listed for low flammabilty. The finished 2- and 3-layer composites (including the adhesives) have also been tested using a vertical burning flame test, and both 4mm and 7mm materials meet class UL94-V0. The acoustic foam material supplied in AcoustiPack™ EXTRA is certified to UL94-HF1. These low flammability results more than satisfy BS EN 60950-1:2002 ‘Information Technology Equipment - Safety’ section 4.7 with respect to resistance to fire for materials inside fire enclosures. You may like to check that alternative sound proofing materials also meet these stringent standards! Acoustic Materials in AcoustiPack™ EXTRA
It has a new improved dark grey/black colour, and is non-shedding and does not crumble or generate dust. This acoustic foam is over 60Kg/m³ - which is unusually dense compared to cheaper alternative noise-reduction foams (most are under 30Kg/m³). The reasons we choose to source such a high-density acoustic foam are:
Flammability The acoustic foam is certified to the highest appropriate UL94 specification for a foamed product (UL94 HF1) for low flammability. RoHS (Restriction Of the use of certain Hazardous Substances)
Normal Operating Environment The foam material is suitable for use in indoor environments within the temperature range -40°C to +100°C, which is in excess of those typically suitable for IT equipment.
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AvailabilityWhere can I buy the AcoustiPack™ EXTRA Acoustic Foam Blocks to help reduce noise from my PC?NORTH AMERICAUSA & Canada 
Features & Benefits
Fitting RecommendationsA computer case can be fitted from start to finish within about 30-45 minutes depending on the complexity of the case.  Fitting recommendations are supplied in the User Instructions with the pack, and are available for download here: Other Acoustic Kits |
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All Rights Reserved. Graphics and content ©2008. Acousti Products Ltd is a company registered in England and Wales No. 04514007. Registered Office: Lifford Hall, Lifford Lane, Birmingham, B30 3JN UK. Tel: +44 (0)845 873 1143. Fax: +44 (0)870 922 3971. See our Terms and Conditions.
More details about ULTIMATE.
AcoustiPack™ EXTRA Foam Block is precision-cut from a semi-open cell dense but flexible professional-grade polyurethane acoustic foam. 
The foam is RoHS certified. RoHS restricts the use of six substances to within specified limits (Lead Pb, Cadmium Cd, Mercury Hg, Hexavalent Chromium Cr+6, Polybrominated biphenyls PBB and Polybrominated diphenyl ethers PBDEs/PBBEs) within Electrical and Electronic Equipment (often referred to as EEE), thereby contributing to the protection of human health and the environment.
The AcoustiPack™ product range have been designed to be shipped to the end-customer without the need for extra packaging. The individual product packaging is not printed on one side, and is strong enough to withstand normal handling during transit. The cardboard has a min recycled content of 35%.
AcoustiPack™ EXTRA
Deluxe
Please take care to read the installation recommendations before installing this product. These materials are installed at the installer's own risk.
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AcoustiPack™ User Instructions