Shipping Container 7' Wide Rollup Door Header PlateRoll Up Door Header plate Note This headers plate is only necessary on a 7' wide roll up door. If you're taking off the cargo doors and putting in a 7' roll up door, you will definitely need this. Header plates, sometimes referred to as "top end rails", are plates that protect the roll up door barrel and cap everything off to prevent weather from getting into your container. You will weld this to the top and side of your container. A must have for a