21_1/2x23_5/16x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack Lighting HOLD function

HOLD function

(1) 355 ml bottle of Coco B Base Nutrients

Spray and walk away

Perfect Color HPS grow room glasses are the go-to optical tool for indoor horticulture under high pressure sodium lights

28 x PotPro™ | 5 Gallon

21_1/2x23_5/16x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack Lighting HOLD functionNordic Pure Custom MERV 7 Plus Carbon air filters are made based on the actual measurements so be sure to measure your current filter to get the EXACT dimensions before ordering. As with all Nordic Pure filters, the effective life of your filter depends on the environment in which you live. We recommend changing 1 and 2 filters every 30 90 days. Our 4, 5 and 6 inch thick filters could last up to 6 months. EXACT MEASUREMENT: Furnace and air condition