Promat displays the high cold sealing performance of its ventilation and smoke extraction ducts.
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These tests, carried out in an approved laboratory, have shown that the Promat pipes subjected to overpressures or depressions up to 1500 Pa meet the requirements of sealing class D (i.e. at +/- 1500 Pa, a leakage rate of less than 0.42 m3.h-1.m-2).


