Suited for vertical installation - (opening pressure> 65 Pa)
Return flap with magnetic slats, 3 return flap layers in one box. Suitable for vertical installation - (opening pressure> 65 Pa). This advanced return flap has magnetic slats (Ø150), which ensures that it does not pull in through the opening for exhaust. The slats first open at a pressure of 65 Pa. The thermo box has 3 return flap strokes in one box and there is air between the three layers so that the box acts as an insulator. For some installations, the return flap, which the hood is born with, may rattle. The Thermobox will prevent this.