Quote:

470 BB 7500 max.............




You need appx 164 sq" of filtering area.

A 14x3 wont do it

A 16x3 wont do it (150.75sq")

A 14 x 4" WILL work.....179 sq"r

A 14 x 3 with extreme lid will work also.... = 221 sq" of filtering area.


On the issue of filter tops...I agree people do their own trialling..

BUT... theres no point doing a back to back if the filter without the lid wont support the required flow..........