BDP is a combination of three Carrier companies - Bryant, Day and Night, and Payne. The residential air cleaner filters among these brands are interchangeable. There is a large selection of sizes and MERV ratings available. ***PLEASE NOTE: There are multiple versions of some nominal sizes such as 16x25x5, 20x20x5, and 20x25x5 that will have different actual dimensions. It is important to choose the correct replacement, so please pay attention to your replacement filter`s exact size and model number. There are many additional model numbers that can be searched for in our keyword search bar above. If you're having trouble finding the correct replacement whole house air filter, contact U.S. Home Filter today.