Flanders® Precisionaire® Merv 4 Heavy-duty Flat-panel Spun Glass Air Filter, 18x24x1 In., 12 Per Case
| Designed for use in any application where disposable panel filters are recommended | They are specifically designed for heavy workloads | One piece moisture resistant chipboard frame prevents broken corners | Support grilles on both sides for exceptional strength | Filters are UL 900 Class 2 listed
