Standing Seam Metal Panel Roof Snow Retention In two quick steps, we'll narrow down the options for your metal panel snow retention project: Step 1 of 2... Select the General Profile of Your Seam: Image Single-Fold Image Double-Fold Image Snap-Seam Image Snap-Lock Image Batten-Cap Image Nail-Strip Image Bulb-Seam Image T-Seam Image Conceal-Fix Image Copper-Panels Request my FREE Layout & Design Quote! NOTE: The seam profile examples shown are for general identification purposes only. Many seam types appear similar, so compare the seam shown to your seam carefully. If you’re unsure, or if you don't see your profile here, please contact Rocky Mountain Snow Guards for additional help.