The big box stores only carried the garage door sealer that fed into a metal track. They did not have one to nail into the bottom of the door. I found this item on Amazon and its description fit perfectly with what I needed (thank you for the clear description); it was just as described and matched my need perfectly. The hardest part of the replacement was pulling the nails that had secured the 30+ year sealer that finally died. If I could make one suggestion, I'd urge the supplier to provide 25-30 galvanized roofing nails. The sealer comes with none, which was not a big deal as I spent about five bucks buying a box of 3/4 inch roofing nails, but I had a box of 250 nails and have little use for the rest. The supplier might charge a buck more and include 50 nails (or provide that option). Whatever. The sealer is thick and heavy duty and works great on my garage door. Good product.