21_1/2x23_3/8x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack grow-light-reflectors ETL Item # Description Product

ETL Item # Description Product Dimension Net Lbs Box Dimension Gross lbs CS/QTY UG-BA1000ECO UltraGrow – 1

Comes with a Centurion Silencer which reduces dust collector noise by up to 50%

4 x 12-Inches (43x26

Double-ended K12 x 30s lamp holders

21_1/2x23_3/8x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack grow-light-reflectors ETL Item # Description ProductNordic Pure Custom MERV 13 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