Ya it had smooth head screws...a beast to say the least.
Edit: Sorry 'bout the $$$ I keep forgetting.
Printable View
could have been done a lot better
Also forgot to add I can't keep my hand on the supply duct without it hurting from the heat right above the unit. Is it just because this is more efficient?
Could be low air flow. But often with a 60 degree temp rise it will tend to burn your hand. And a 60 degree temp rise is ok.