The Horizon 20" Marshal Smoker sets the standard for a huge barbecue smoker at a great price.  With a few less items that come with the upgraded 20" RD Special, this unit is the same barbecue size wise but for those that want to maybe save a few dollars and may not feel the need for those extras.  It's a very big BBQ at a great price.  The main chamber is 20" by 44" with a firebox of 2o" by 22" and  comes with 20" Steel Wagon Wheels .  The warming tray on the firebox comes standard and is a great place to heat your sauces or beans.