Labeled UB8 - as shown. EXACTLY followed the photos from the instruction manual. The first TWO broke, the motor shaft burned out. Researched. My model is 116-39512990, requires KC28SCZPZ000 (4369591). Further research revealed that the UB8 is a Panasonic belt. 4369591 (KC28SCZPZ000) is UB1, also called 20-5275 and 20-5240. Backordered from Canmore. I will try the THIRD belt from my original order and when my new order arrives I will try one of these. I will edit this review at this point.