: Typically includes a 40–50 gallon fresh water tank, with gray and black tanks ranging from 22 to 32 gallons .

Despite its size, the 21QB is designed to sleep up to : Leprechaun Class C Motorhomes - Coachmen RV

A used 21QB typically sits on either a or Chevy 3500/4500 chassis.

: Often powered by a 7.3L V8 (newer models) or a 6.0L V8/6.8L V10 (older models), delivering over 300 hp.