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

Ideal Warehouse Cobalt Replacement HEPA Filter, 18&quot;W x 31&quot;D x 6&quot;H, Pack of 2

Ideal Warehouse Cobalt - Ceiling-Mounted Air Purification System

Surgically Clean Air&#153; Cobalt Replacement HEPA Filter, 18"W x 31"D x 6"H, Pack of 2

cobalt-replacement-hepa-filter-18w-x-31d-x-6h-pack-of-2

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