"TWIN-TURBO FILTER SYSTEMS
Two foam air filtration sources, not one, for the ultimate airflow!
Fits most existing air intake systems up to 3". Includes twin pipe adapter with 2 filtration units. Heavy-duty plastic. 3-1/2" diameter x 2-1/2" high. "
its avail at JCWhitney.com, $39
I was thinking of putting it over my snorkel intake on dusty off road trails
Fits over any standard 3' intake it looks like