Permatron air cleaner upgrade kit includes:
(Qty 1) Electrostatic pre-filter
(Qty 3) Activated carbon post-filter
Designed specifically for the White-Rodgers or Electro-Air 16 x 21 air cleaners. Each filter measures 16 x 21 x 5/16". This upgrade kit is for all SST1000, SST10, 10C26S-xxxx.
These filters are the full size of the air cleaner and not split in pairs like the original White-Rodgers filters. One Permatron prefilter replaces the pair of original half size F825-0431 prefilters.
One permatron carbon filter replaces the F825-0466 carbon filter. These Permatron filters simply side right in and do not require clips as with White-Rodgers carbon filters.