Etsy is widely considered the top destination for glass block decals due to the sheer variety of independent artists offering pre-sized and custom options. : A "Star Seller" known for high-quality designs using Oracal 631 vinyl

, which is a popular choice for lighted glass block displays. 3. Specialty Craft Suppliers

: Standard glass blocks are usually 7.5" x 7.5" or 5.5" x 5.5". Ensure your decal is sized at least 1–1.5 inches smaller than the block to leave a proper border.