Ventilation
JWI Ventilation two stage ventilation louvres comprising of a second stage on the front louvre blade. Designed for use where traditional ventilation louvres cannot perform such as high wind loads and extreme environmental conditions will destroy traditional galvanised steel ventilation louvres. JWI 100.VF comprises of a solid aluminium blade with an extruded aluminium clip. The aluminium clips are fixed onto aluminium support mullions.
