Horizontal and vertical installation possible. Flow direction with vertical installation from bottom to top. With 2 opposing flap halves made of aluminum. With all-round seal. Check valves open in the air flow and close via spring force.Article: AVM 20, Air direction: ventilation or exhaust, Installation position: vertical / horizontal, Material: Sheet steel, galvanized, Weight: 0.78 kg, Weight with packaging: 0.8 kg, Flap type: self-tapping. opening/closing, nominal width: 200 mm, width: 198 mm, height: 198 mm, depth: 88 mm, width with packaging: 198 mm, height with packaging: 198 mm, depth with packaging: 88 mm, suitable for box fans: no, suitable for roof fans: yes, suitable for duct fans: yes, suitable for heat recovery systems: no, suitable for wall-mounted fans: no, suitable for wall-mounted fans: no, suitable for residential fans: no, suitable for centrifugal fans: no, suitable for circulation fans: no
| Property | Value |
| Material: | stainless steel |
