Kenmore no longer lists specific dimensions for the 86873100. You can buy replacement bulkheads for this dryer, however. The dimensions of the bulkhead are 31.5 inches long and 28.5 inches wide. The top part of the dryer has similar dimensions. This indicates that the Kenmore 86873100 is about 31.5 inches deep and 28.5 inches wide. The height is roughly 30 inches.
Some other part sizes are listed to indicate the overall dryer size. For example, according to Sears, the dryer drum is about 30.5 inches long, about 21.5 inches tall and about 30.5 inches wide. It weighs just less than 21 pounds.
The Kenmore 86873100 features a super capacity load option. This means it can hold a large load of clothes, more than the average dryer. It is also able to dry larger items such as blankets because of the super capacity load size. It also has a heavy duty drying capability, meaning it can dry large and heavy duty items such as comforters and rugs.
Depending on your room size, the Kenmore 86873100 or similarly sized dryers might not fit. Do not fret; you have other options. For example, compact dryers are smaller and fit in smaller spaces. They are about 22 to 24 inches wide. You can also stack compact dryers on top of front loading washing machines, which works well in tall, narrow laundry rooms. Or, you can purchase a washer/dryer combination, which is a stacked washer and dryer unit that stands upright. These combination machines are typically 27 inches wide, 75 inches high and 31 inches deep.
If you have a large laundry room, you can place your Kenmore 86873100 dryer on a pedestal. This adds about 12 inches to the height, filling in more space in the room so it doesn't look empty. It also raises the machine's front loading door, so you can put clothes in or take them out easier without having to bend over or squat too low.