I ordered this item on AMAZON and apparently the Cadence 850 had several different model numbers and sizes. There is nothing when placing order on amazon that allows you to specify the exact model number, (i.e. WLTL85053 etc.) Even though the description on Amazaon makes it sound like it fits all Weslo Cadence 850 Treadmills, it does not! I am returning to Treadmill Doctor. On their site, you can see that different model numbers have different measurements. I'm sure they will send me the correct one.
Product Description
A durable walking belt of the highest quality, it has an exceptional one year warranty. It is pre-lubed, with an additional tube of lube for suggested use at 6-8 months after installation. Unlike some factory belts, a Treadmill Doctor replacement walking belt does not have a foul smell! This includes model number(s) WLTL85050, WLTL85051, WLTL85052, WLTL85053, WLTL85054, WLTL85055, WLTL85056.
Click Here to see more reviews about: Weslo Cadence 850 Treadmill Walking Belt