California Hydrotest Labels, White Vinyl, 3 1/4" x 2 1/4" - HYDROSTATIC TEST and 6-YEAR MAINTENANCE LABELS are a necessary reminder to keep your customer’s equipment maintenance and inspections up to date. And they can be custom imprinted with your company name, address, and phone number in white vinyl. (shows “Void” when removed—as recommended in NFPA 10). Roll/100 (10 roll minimum order for vinyl labels; 5 roll minimum order for metallic labels—priced per roll). Delivery is 4–6 weeks.