Filter sizePost created: 2012-12-31 Type of Equipment: Furnace Views: 40
This question was created on the page: http://www.furnacecompare.com/furnaces/armstrong/ultra-v-tech-91.html.
On 2013-01-01 JB wrote:
For some reason there is a lack of available owner's manuals online or at the Armstrong website. If you have the owner's manual you should be able to find the filter size there. Otherwise, I would suggest calling Armstrong directly or a local HVAC tech.
Sorry not to be of more help.