This is a specific and high-quality construction method, often referred to as "Deep-Pour Resin Face" or "Epoxy-Filled" channel letters. Breakdown of the Components You Mentioned: SS/Aluminum Weld to 20-100mm Deep: This is the can or tray of the letter. Material: Stainless Steel (SS) for extreme durability and a premium finish, or Aluminum for a excellent balance of cost, weight, and...
