General Finishes Exterior 450 Clear and White are flexible single-component, polyurethane/acrylic finishes designed to adapt to exterior conditions, making them suitable for DIY, professional, and OEM use. We have a trio of exterior products, which includes 450 Stain. Both White and Clear exterior coatings are Tintable with zero VOC colorants 10% by weight or volume to standard color decks. General Finishes recommends ColourFal Zero.