Yeah, its called flashing. I found it cheaper at a mom& pops (family owned, 3rd gen) than the prices at 'chain store' hardware stores. I've actually found many things cheaper but higher quality in these little hardwares. Hope you have a store like this near you. They're really great for people like us DIY-ers! Once they get to know your face, customer service feels like family. At my fav little store, they take me into their private kitchen for coffee & to see the kittens! Becoming friends with the hardware store owners, & the guy who owns my grow store was the best thing I could have done!