Can't get URxvt to work with the font "Inter". Using it causes spaces in-between letters

I cannot get the popular Google font "Inter" to work with URxvt. When I set the font, xrdb -merge .Xresources and open a new terminal, it has spaces between the letters l i k e t h i s. Suggestions on Google point to URxvt.letterSpace: -1, but this doesn't do anything. Also, I don't need to use this for my other working fonts. I know Inter works because it's installed on my system and I am using it in my top panel. I know other fonts are working in URxvt, specifically UbuntuMono Nerd Font Mono and Noto Sans Mono. In my .Xresources it looks like this: URxvt.font: xft:Inter: size=13. I tried things like Inter-regular, Inter: style=regular, but nothing works. Not sure what I am doing wrong. There is nothing special or fancy about the Inter font.