Quest MERV 13 Replacement Filter for Next Gen 155, 205, 225, 200 50-Hz - 17.5 x 17.5 x 1.75 Timers Adopt the Grodan Stone Wool

Adopt the Grodan Stone Wool Gro-Slabs Expert Slab 20/75 and take a step closer to achieving gardening excellence

and that's where it earns its keep

15% Less Power: Higher airflow at lower draw for 24/7 ventilation

75% and 84% if the application needs more moisture

consistent results

Quest MERV 13 Replacement Filter for Next Gen 155, 205, 225, 200 50-Hz - 17.5 x 17.5 x 1.75 Timers Adopt the Grodan Stone WoolQuest 225 MERV 13 Replacement Filter and the Coil It Guards Quest part 4042787 is the pleated MERV 13 panel that seats in a Next Gen 155, 205 or 225. It is the last thing between the room and the evaporator coil. In a flowering room that room is carrying leaf dust, spent media and spores. MERV 13 is the densest grade Quest offers in this size. The EPA holds it to 50 percent or better from 0. 3 to 1 micron. That rises to 85 percent from 1 to 3 microns