• Basic encasement for recessed installation, made of ABS plastic.
• Stainless steel spigot, integrating the K90 fireproof valve, TUM certified according to DIN 18017-3.
• Backdraught shutter compliant with DIN 18017-3, as certified by TUV German Institute.
• Spigot nominal diameter: 80 mm.
• Square frame to prevent entry of dirt and plaster.
• Connection port to connect a spigot (QE-AD cod. 21118, available as accessory) able to extract air from a second room.
• Possibility of drywall installation.