FILTERWEARS Pre-Filter F112 For SPECTRE Air Filter HPR9935
5337-KDirect from manufacturer. Made in the USA.
Filter material: 100% monofilament polyester with water repellent finish standard on all pre-filters. Closed top, round taper pre-filter.
Measurements: 5.22"(top diameter), 6.13"(base diameter), 7.13"(height)
Fits Spectre Air Filter: HPR9935