model number

I'm attempting to replace the filter drier of my 25 year old Goodman unit. I have recovered the R-22 and now am at the point where I need to solder in a new filter drier. How do I know what type, brand, model of filter drier to use? Should I just buy one that looks like the one I'm replacing...

Trying to figure out the model of my "carrier, High Efficiency" Air/heat unit. I live in the desert in nevada and this unit is on the top of our two story home. The Home was built in 1989 and Of course I have none of the original manufacturing manuals or anything. Pretty much ANY previous...