I installed two 4 x 6's above my garage door.  Very happy with the quality.  Better than those sold in home improvement stores.  Also comes in many sizes to suit your space and needs.  Although it took several hours to install, once the first one went up properly, the second one was installed quickly. Good to get items off the garage floor.  Definitely would do again.

Pros: Great quality.  Very sturdy. Assortment of sizes for any space.
Cons: Time consuming at first to get it right but became a pro after that.