Depending on your ventilation requirements, you may not use all of these parts.

Power cord clamp bushing (1ea): for the cord hole in a metal upper cabinet
1/4" x 2" lag screw (2ea): for wall stud holes
1/4" x 3" toggle bolts (2ea): for drywall holes
Spring toggle heads (2ea): for the toggle bolts
1/4" x 3" bolts (2ea): for securing to the upper cabinet
Tapping screws (2ea): for attaching the damper duct connector
Power cord clamp (1ea) and dark-colored mounting screw (1ea): to hold the power cord
Mounting plate (1ea): for supporting the microwave oven
Back-draft damper: 2 pieces must be assembled as shown. (for roof venting or wall venting installation, not for room venting installation)
Upper cabinet template (1ea)
Rear wall template (1ea): 1 piece mounting plate only
You need to install at least one lag screw into a 2" x 4" stud and three anchor bolts into the wall. The mounting area must meet the 150 lb. weight requirement.