Aprilaire 1413 upgrade kit
James Schifferns - Spokane WA (Saturday, January 18, 2014)
This was a fast and easy upgrade. The 'kit' consists of two rails, four uprights, a filter, and a door seal It takes about a minute, possibly less to snap together the rails and the four vertical uprights. You then remove that clunky old filter from your furnace, slide in the new rails and bend down a lockdown tab. Next take out the new filter media and slide it easily onto the rails. No more taking apart that giant filter comb and assembling the media. In addition you get a much better filter element in the deal. I'm very, very satisfied and glad I did the upgrade.