Aprilaire 213 Replacement Air Filters provide MERV-13 filtration efficiency. Aprilaire 213 MERV 13 Filter - 8-pack.These filters are designed to fit Aprilaire whole house air cleaner models # 4200, 3210, 2210, and 1210.
Aprilaire 510 Air Filter (MERV-11) - 2-Pack. The Aprilaire 510 Replacement Air Filter provides MERV-11 filtration efficiency.This filter is designed for Aprilaire air cleaner model #1510.