Our Flap ventilators consist of Ecobac DV 110 for arcade rooflight Fumetica double flap vent large extraction capacity Ecobac 160 PN/TC SHEV Ecofeu 110 SCE Smoke vents for stairwells Ecofeu Premium Alu 110 SCE Ecofeu DV 110 double flap ventilator Ecofeu Premium Alu 160 PN Ecofeu 160 EL/PN/TC Fumetica-S double flap system inclination of 7° Duo Therma double flap ventilator