V/Axia 472318 Internal Fit Wall Kit White Grille. 6 Vent-Axia Has Been The Leading Manufacturer For 75 Years When It Comes To Ventilation. With This Experience Behind Them, It'S No Surprise That They Are Innovators As Well, Continuously Producing New Lines With Energy Saving, Lo-Carbon Products. With A Vast Range Spanning Cool Air To Electric Heating, And Everything In Between, You Know Vent-Axia Is A Name You Can Trust With Your Ventilation Needs. The Va 472318 Is A 117mm (Diameter) Internal Wall Kit, Designed To Simplify The Installation And Improve The Finish Of 100mm Through-The-Wall Installations. With Tubes That Extend To Accommodate Wall Thicknesses From 225mm To 390mm, The Kit Can Be Installed From Inside The Property, Making It A Convenient Alternative For High Rise Buildings, Where Scaffolding Would Otherwise Be Required. The Kit Includes A White External Grille And A Water Ingress Protection Shroud.