Installed the Reach Barrier yesterday with the help of my nephew. It took us 2 1/2 hours to complete one 16 foot door and an 8 foot door. The sizes of the doors were not consisent and required a little adaption. I also bought two 48 pages of stickies to ensure I had enough to adhere the insulation to the doors. We also used reflective tape to shape the insulation and adhere the panels togather since we had to cut one to add length to the 52 inch wide door panels. I would suggest having extra panels in the event your doors are not 48" in width. I bought 4 boxes of 8 panels each and had 1 panel left over.