Acoustic insulation to airborne noise of elbow of downcomer of 90 mm diameter, made with glass wool blanket, according to UNE-EN 14303, covered by one of its faces with aluminum reinforced acting as vapor barrier, of 30 mm thickness, for insulation of air ducts in air conditioning, thermal resistance 0.86 m²K/W, thermal conductivity 0.035 W/(mK); with 39.76 dB global reduction index of acoustic insulation, Rw, according to UNE-EN 14366; providing an improvement of the global reduction index of acoustic insulation weighted A of 9.43 dBA, in downcomers with medium flow of 60 l/min; disposed around the downcomer in the form of a coquilla and fixed with plastic bridges. Including self-adhesive tape for sealing of joints.
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| Code | NBA032 |
| Category | Tuberias y bajantes |
| Subcategory | |
| Unit | ud. |
| Resource Type | material |
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No credit card required · Free plan forever · Last updated May 22, 2026
| Last Updated |
| May 22, 2026 |