Filter Box 4" 96mm, 5" 124mm and 6" 150mm dia (spigot dia) available (select above)

Spigot Diameters PLEASE TAKE NOTE OF THE ABOVE DIA

Spigots on both ends 
Reduces airborne particles from entering your House, grow room or tent.

Filtration to EU3, 90% efficient, down to 5 microns.
Can be mounted at any angle.
Robust galvanized steel construction.
Washable filter included.
Spare filters are available.

Please make sure your fan can take the pressure of this item measured at 35-55 Pa Depending on being clean etc