Ask Me Help Desk
>
Home & Garden
>
Heating & Air Conditioning
> What size filter for model GLB130NBI
PDA
View Full Version :
What size filter for model GLB130NBI
dpow
Nov 22, 2014, 06:55 AM
I have an old Greenbrier / Friedrich gas furnace. What size filters are used ?
bitters
Nov 22, 2014, 11:03 AM
Measure the return duct where it enters the furnace.
ma0641
Nov 22, 2014, 02:16 PM
There should be a slot where the filter fits. Measure across both directions.