Acoustic insulation for downward air noise located in a duct for installations lined with wood, by applying a bituminous sheet with a polypropylene reinforcement of 4 mm thickness and 5 kg/m² surface mass to each interior face of the lining.
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| Code | NBA010 |
| Category | Tuberias y bajantes |
| Subcategory | |
| Unit | m² |
| Resource Type | material |
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No credit card required · Free plan forever · Last updated May 21, 2026
| Last Updated |
| May 21, 2026 |