Galvanized material is manufactured by applying a zinc coating to sheet steel. The zinc coating resists corrosion. While this material is a specification on some projects, a better choice for corrosion resistance with good paint adhesion, form-ability, and resistance to flaking is the A-60 material you can also get from HMF Express.
Galvanized (G-90) material used on HMF Express doors and frames conforms to industry standard ASTM A-263.
You can select from 12 thru 18 gauge thicknesses.
If your project requires information on recycled content or other information for LEED certification, let us know and we can get you an updated letter like this one.