What is the difference between the 4000 and 3000 models?
The difference between the TR3000i and TR4000i are the following:. 1. TR3000i has a 2.5 HP Continuous Duty DC and TR4000i has 3.25 HP Continuous Duty DC. 2. TR3000i has slightly smaller Belt size at 20" x 56" and the TR4000i has 20" x 60". 3. TR3000i