Safe metal ducting contains rubber seals while standard metal ducting does not.
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Bathroom zones are just a way of telling which extractor fan you can install in a specific place.
Has a turning circular blade with an EPDM-rubber seal which tightens against the inside of the damper when closed. The blade can be adjusted in a 0–90° angle. The cup at Ø 80–630 can be complemented with the special insulation cup IK at insulation thicker than 50 mm. The damper can be used for regulating at rare occations. There is a separate assembly, measuring, balancing and maintenance instruction for this product. Ø 80–315 fullfills pressure class C in closed position. Ø 355–630 fullfills pressure class B in closed position. Ø 710–1000 fullfills pressure class A in closed position.
The torque needed for the motorizing is given in the adjacent table. Ø710–1000 is not possible to motorize on site.
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