Is MPR 700 good enough for a normal home?

Yes for basic dust and lint control. If anyone in the house has allergies or pets, step up to MPR 1200 or higher.

How often should I change this filter?

Every 1 to 3 months. In a dusty home or with pets, lean toward monthly changes.

Yes, it is a nominal 24x30x1 filter. Actual size runs slightly under, which is normal and helps it slide in.

MPR is 3M's own rating scale; MERV is the industry standard. MPR 700 roughly corresponds to MERV 8 to 11 depending on the test.

That is about $8 per filter, which is low for this size and rating. Only one store lists it new, so check back for stock.

At Walmart, for $16.13, as of our latest check.

$16.13at WalmartObserved at 9:51 PM

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