Aerostar MERV 13 Collapsible Replacement Filter for Aprilaire 413

Aerostar MERV 13 Collapsible Replacement Filter for Aprilaire 413, Aftermarket Replacement Filter for Aprilaire 413 MERV 13 Efficiency Rating, Actual Size: 15 7/8 x 28 3/4 x 4 1/8, Nominal Size: 16x28x4 Fits in Air cleaner models 1410, 1610, 2410, 3410 and 4400 Can be used in Air cleaner models 2400 and 2140 if cabinet is upgraded with 1413 Media Upgrade Kit Also replaces Source-1 part S1-FM413, AprilAire is a trademark owned by Research Products Corporation. The seller of this product is not affiliated with or endorsed by Research Products Corporation.