12 x 30 x 1 Air Filters

The 12x30x1 filter on this page is the 3M Filtrete 1000 Micro Allergen & Dust Defense, which 3M's conversion chart lists as MERV 11. Filtrete recommends changing 1-inch filters at least every 3 months, so plan on four changes a year.

Specs

The Filtrete 1000 12x30x1 is a 1-inch filter rated MPR 1000, which equals MERV 11 on 3M's MPR-to-MERV chart.

• Size: 12 x 30 x 1 (nominal)
• Rating: MPR 1000 / MERV 11
• Change interval: at least every 3 months

Buy the size printed on your current filter's frame. Need a different size? Browse air filters by size, or use our air filter finder.

Common questions

What MERV is Filtrete 1000?

Filtrete 1000 is MERV 11, according to 3M's MPR-to-MERV conversion chart. MPR is 3M's own rating scale for Filtrete filters, while MERV is the industry scale used to compare filters across brands.

How often should you change a 12x30x1 filter?

A 12x30x1 filter should be changed at least every 3 months, according to Filtrete. Writing the install date on the filter frame makes it easy to know when the next change is due.