Only Xpelair offers innovative approaches to fitting from inside a building. The revolutionary simply Silent Wall kit allows fuss-free fitting of the outer grille from the inside of a property, it really couldn't be easier. Simply Silent easy-fit wall kit simply push the folded outer grille through the wall tube and pull the attached string back to secure the steel spring clips ensuring a quick, easy and secure installation.Box Contains1 x External grille1 x 300mm wall tube1 x installation instructions

_Folding external ventilation grille enables so simple installation from inside the building.
_Steel spring clips secure the external grille into place.
_So simple installation, no need for Ladders, scaffolding or outside installation in all weathers
_Supplied with a high Quality 300mm length of 4 inch diameter wall tube.
_Suitable for installation with 4" Diameter extractor fans.