We have a 2004 Bauer K18.1 (DDTR260-E3/D) 6000 PSI 20 CFM breathing air compressor, 23 HP Lister-Pedder diesel/20 HP electric 3 phase motor, mounted to a Bauer skid, with four 6000 PSI 510 CF air storage cylinders under chassis, with auto cascade refill from storage cylinders, P2 filtration w/Securus, electronic CO monitor, electric 15' 3 phase shore line, Unit had 808 hours when we got it. It has 823 hours on the diesel unit now after we resolved minor issues and used it to refill tall air cascade cylinders for a couople of days, $35,000, add a used fully functional Bauer CFS II two position containment fill station for $5500. Unit was in the original Bauer air trailer when trailer axle was broken in a road accident. Buyer of trailer had no use for the air system. Unit is on a single steel skid with forklift slots. 2800 lbs, 87" L x 48" W x 63" H