BACKDRAUGHT SHUTTER
Galvanized sheet-metal backdraught shutter with aluminium fins and return springs to install in the discharge of the fans. They prevent odors, air currents, water penetration due to rain when the fans are off and prevent heating leaks when the extractor does not work.
A | B | C | D | E |
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128 | 122 | 23 | 110 | 36.5 |