1413 Aprilaire Upgrade Kit for Model 2400 Air Cleaners.
Genuine Aprilaire 1413 Upgrade Kit
High Performance Upgrade for Aprilaire / Space Gard Models 2400 and 2140
This upgrade improves the efficiency of Air Cleaners. The upgrade kit comes with one MERV 13 rated filter (Part No. # 413) which is considered to be a 65% improvement. MERV 11 rated filter (Model No. 410) is also compatible but not included in 1413 Upgrade Kit
Includes: MERV 13 Rated Filter, metal frame base, supports