Thanks for the info and review, I really hope I can make the air cleaner work.
By the way white pony I got that spacer cut at "Supermarket Metals" over on S.E. 84th street not too far from you in Moore. I walked in and gave the guy my phenolic spacer and he took me back, cut me off a piece of 1"x5"x6" aluminum flat bar. thanked me, gave me a pen, a conversion table card, and his business card and it cost me all of $12.00. No doubt I will do business with them again. Not bad.