Automatic closing flaps for ventilation. External wall connection when using the WH wall sleeve. With concealed screw holes. Sealing tape included in delivery. Accessories: Fly screen FG can be used. Article: AP 150/1, Air direction: Ventilation, Pressure loss: 10 Pa, Installation location: Wall, Material: Plastic, weather- and UV-resistant, Color: traffic white, similar to RAL 9016, Weight: 0.4 kg, Weight with packaging: 0.41 kg, Flap type: self-closing. opening/closing, Suitable for nominal width: 150 mm, Width: 200 mm, Height: 200 mm, Depth: 55 mm, Width with packaging: 202 mm, Height with packaging: 202 mm, Depth with packaging: 57 mm, Ambient temperature: 60 °C, Nominal diameter channel: 150 mm, Nominal diameter channel: 150 mm, Front height: 200 mm, Front width: 200 mm, With installation frame: yes