Manrose DHRIWKBBS Quick Fit 4 Inch Wall and Shutter Grille Kit Brown

Innovative Manrose quick fitting internal wall kit with backdraft shutter, can be installed fully from the inside of a property. Negates the requirement to fix an external wall grille requiring a ladder, scaffolding or other. Simply insert the tube into the hole, deploy the external grille and 3 pins hold the wall kit firmly in place. Then pull back the the external grille against the external wall and a tight fitting seal is created. The seal is that tight it will also protect from water ingress.

• Designed to fit through a 117mm diameter hole.
• Designed for use with any 4" or 100mm extractor fan.
• Minimum wall thickness: 225mm
• Maximum wall thickness: 390mm
• Supplied with wall grille and rubber seal.
• Colour: Brown external grille
• Can be used as a passive air inlet grille.