FDM
FDM is a three-layer acoustic lining composite from AMC Mecanocaucho, combining a beige perforated PVC facing, an M-1 class fire-resistant polyurethane foam absorber, and a 5 kg/m2 viscoelastic mass layer. The added mass layer significantly increases airborne sound insulation compared to foam-only products.
Specifications
- Composition: Beige perforated PVC facing, M-1 class fire-resistant polyurethane foam, and 5 kg/m2 heavy viscoelastic mass layer
- Available thicknesses: 15 mm, 25 mm
- Sheet dimensions: 1200 x 1000 mm
- Weight (FDM-15): 7.335 kg/m2
- Weight (FDM-25): 8.085 kg/m2
- Weighted sound reduction, FDM-15 (Rw): 15 dB
- Weighted sound reduction, FDM-25 (Rw): 13 dB
- Packaging (15 mm): 8 sheets per box
- Packaging (25 mm): 5 sheets per box
- Self-adhesive option: Available (FDM-15 A, FDM-25 A)
Applications
Lining the interior of soundproof cabins, enclosures, and industrial vehicles where both absorption and mass-loaded sound insulation are required. The viscoelastic mass layer dampens vibrations and adds isolation performance beyond foam alone.
Standards and compliance
Fire classification M-1 (French classification for fire-resistant materials). Verified against AMC Mecanocaucho product data.
Frequently asked questions
How does FDM differ from FD?
FDM includes a 5 kg/m2 viscoelastic mass layer bonded behind the foam, raising the panel weight to 7.335 kg/m2 (15 mm) compared to 1.335 kg/m2 for FD-15. This mass layer improves airborne sound insulation, with FDM-15 achieving 15 dB Rw versus 13 dB for FD-15.
Is a self-adhesive version available?
Yes. Both the 15 mm and 25 mm variants are available with a self-adhesive backing, designated FDM-15 A and FDM-25 A.
How many sheets are supplied per box?
The 15 mm variant is supplied 8 sheets per box; the 25 mm variant is supplied 5 sheets per box. Each sheet measures 1200 x 1000 mm.
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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FAQs
What is your return policy?
All refunds and returns are determined by the manufacturer's terms of sale. Change-of-mind refunds are not accepted, but all valid warranty claims will be managed by AKA Acoustics in compliance with consumer law.
How long will it take to receive my order?
Freight lead times will be provided upon order confirmation. Standard items typically ship within 4–6 weeks, while custom orders may take 6–12 weeks.
Is my payment information secure?
Yes, all payments are securely processed through Stripe and are protected under their Terms of Service. AKA Acoustics do not store any payment information ourselves.
How are freight costs calculated?
Freight costs are determined at the time of quotation to ensure accurate pricing based on your specific order. For any questions, please email sales@akaacoustics.com
How can I contact support?
For account inquiries, email accounts@akaacoustics.com. For order support, email sales@akaacoustics.com.