nostr:npub1sd3wwlvl6f58yzs4ss90x07e4dwd7yl6h3n0pygpz9vqjcxd99aq90vwne bought some S9’s pretty cheap over the summer. We have one warming the sunroom where the kittens reside when we’re gone. And more preheating the air for the heat pump. They have been doing a great job for us. Hubby could tell you the specs and where he bought them.