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HEPA Filter used for the 2' x 4' Cobalt Air Purification System with average >99.97&#37; &#64; 0.3 microns Purification.

Ideal Warehouse Cobalt Replacement HEPA Filter, 26&quot;W x 71&quot;D x 4&quot;H, Pack of 2

Ideal Warehouse Cobalt - Ceiling-Mounted Air Purification System

Surgically Clean Air&#153; Cobalt Replacement HEPA Filter, 26"W x 71"D x 4"H, Pack of 2

cobalt-replacement-hepa-filter-26w-x-71d-x-4h-pack-of-2

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