What Size Filter Does a American Standard GAM5B0A24M21SB Use?
American Standard GAM5B0A24M21SB takes
16x20x1
- Replace
- Typically every 1 to 3 months
The unit does not ship with a filter. This size fits the built-in 1 inch filter rail. Some homes have the filter in a return air grille instead.
About this size: 16x20x1 filter guide
Where to find the filter
- Turn off power to the air handler
- Remove the door that covers the filter rail (Phillips head fasteners)
- Slide the old filter out of the molded 1 inch filter rail
- Slide in the new throwaway filter and reinstall the door
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Common questions
What filter does the American Standard GAM5B0A24M21SB use?
It uses a 16x20x1 filter.
How often should I replace it?
Typically every 1 to 3 months. Replace sooner if the filter looks dirty.
Can I use a different brand of filter?
Only if it matches the part number or size listed above. Check your manual if you are unsure.
Source: manufacturer documentation