Filter for Glyphs of certain width

I have a few .tf glyphs that I can easily access via filter (Glyphs Name: ends with: .tf) but I’d like to include other glyphs that are also fixed width but the names don’t end with .tf

Add a smart filter with option Custom, and as code you type layer0.width==300 or whatever your tabular width (in the first master) is:

image

The syntax allows the spelling with single or double equal signs.