Quest MERV 13 Replacement Filter for Quest 506, 706, 746, 876 - 20 x 17.88 x 2, Two Per Unit CANADA an effective pH adjuster with

an effective pH adjuster with buffering capacity

The spurs on the stake keep the tie string or tape from slipping down

precise vapors

high drainage foam with characteristics specifically developed for hydroponics seed germination and vegetative propagation of vegetables

autumn-like red-dominant flower curves

Quest MERV 13 Replacement Filter for Quest 506, 706, 746, 876 - 20 x 17.88 x 2, Two Per Unit CANADA an effective pH adjuster withQuest 506 MERV 13 Replacement Filter and the Coil Behind It Quest part 4038233 is the pleated MERV 13 panel the 6 Series breathes through. On a 506, 706, 746 or 876 that is a lot of air. Everything suspended in it reaches the coil unless the media stops it first. MERV 13 is the densest grade Quest builds for this chassis. The EPA holds it to 50 percent or better from 0. 3 to 1 micron, the band spores travel in. From 3 to 10 microns that rises to 90