Our bigAir® roof units are system-independent. They can be installed in any stick-system assembly, tile roofs and all other pitched roof types. They are ideal for ventilating halls and other spaces topped by roofs with pitches down to 15°.

Lacker’s topSwing roof windows offer a delicately crafted, architecturally appealing, premium-quality daylighting and ventilation solution for attic conversions. topSwing is suitable from an angle of inclination of ca 7°.