Circular fire dampers, KOOLAIR, model SCFC-GD, S/UNE-EN 1366-2:2000. Circular fire damper class:
For sizes from Ø 200 to Ø 630 mm EI-180 (ho i ↔ o) S (500 Pa) or ceiling/floor slab.
For sizes from Ø 200 to Ø 800 mm EI-180 (ve i ↔ o) S (500 Pa) for wall.
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