Zinsser Bulls Eye 1-2-3 White Water-Base Stain Blocking Primer, 5 Gallon is a versatile primer designed to prime and seal a wide variety of interior and exterior surfaces including new drywall, wood, masonry, metal, and glossy finishes. It excels on hard-to-stick surfaces such as old glossy paints, clear finishes, metal, fiberglass, PVC, composites, glass, and tile. This primer not only seals and tones surfaces but also resists mold and mildew formation on both the underside and surface of the primer film, helping to extend the life of your paint job. It inhibits rust formation when applied over clean ferrous metals like iron and steel, eliminating the need for a separate rust-inhibitive primer. The primer dries to a smooth, tight film that resists flash rusting and long-term rust development, making it i for priming metalwork such as iron railings, steel doors, and metal panels. Compatible with both oil and water-based paints, this water-based formula is an excellent all-purpose stain blocker with low odor and easy soap and water cleanup. It can be tinted with many universal colorants, and the gray primer variant enhances coverage and hide for rich or dark topcoat colors. With a drying time of just one hour and coverage of approximately 2250 square feet per 5-gallon pail, this primer provides efficient and reliable performance for your painting projects. Model Number: 2000