Quest MERV 13 Replacement Filter for Quest 335, 335 277V, 375 50-Hz - 20 x 22 x 2 24 VAC Solenoid Valves Dolomitic & Calcitic Limestone (pH

Dolomitic & Calcitic Limestone (pH adjuster)

The KDF85 stage lasts about twice as long as the standard green carbon

Four to seven grams of contents

Gel filled (non-refillable)

Some cultivars and growing conditions may require higher doses of Calcium

Quest MERV 13 Replacement Filter for Quest 335, 335 277V, 375 50-Hz - 20 x 22 x 2 24 VAC Solenoid Valves Dolomitic & Calcitic Limestone (pHQuest 335 MERV 13 Replacement Filter and the Coil It Protects Quest part 4042545 01 is a pleated panel of MERV 13 media in a 20 x 22 x 2 frame. It is the only thing between a 335's evaporator coil and whatever the room throws off. Leaf dust, perlite grit, spent media, spores. MERV 13 is the densest grade Quest builds for this chassis. The EPA puts it at 50 percent or better capture from 0. 3 to 1 micron, the range spores travel in. From 3 to 10