The Forsyth is the king of even heat cooking. Featuring reverse flow airflow dynamics, this model allows you to cook large batches of the same cut of meat at a consistent, even temperature. This cooker can handle four 15-18lb packer briskets, 8-12 pork butts, 12 slabs of ribs (In a Rib Racks) or 16 whole chickens. The cooking grate is made from heavy duty expanded metal and the cooker comes standard with tuning plates and a log grate in the firebox. The big upgrade going from the 1830 to the 2040 is obviously the increased cooking space and having the 2nd tier grate. However, another awesome feature is the cowboy style firebox with grilling grate that allows you to sear and smoke on the same cooker. The added counterweight also makes lifting the cook chamber door a breeze. 
 
Specifications: 
1/4" Thick Cook Chamber and Firebox
35" Wide x 19" Deep Cooking Grate (Main)
35" Wide x 16" Deep Cooking Grate (Upper)
11" Clearance in Cook Chamber without Upper Grate
Total Cooker Dimensions: 72" Long x 72" Tall x 23" Deep
20" Firebox Plenty big enough for 16" Split Logs
 
Standard Features:
Two Tel-Tru Thermometers
Tuning Plates for Controlling Temperature
Log Grate in Firebox
Bottom Storage Shelf
5" Caster Set 
Cowboy Firebox Grill
 
Additional Options:
2nd Tier Cooking Grate
Cover