MATERIAL: Black Vinyl, High quality, sturdy exterior grade. 3 inch letters and numbers VERSATILE APPLICATIONS: These numbers can be used on art & décor projects, mailboxes, doors, walls, plaques, etc. SURFACE MOUNTING: When applying, the surface application temperature should be 50-85˚ F/ 10-27˚ C SELF-ADHESIVE: To apply self-adhesive back, ensure mounting surface is clean and dry before pressing sign firmly to surface to activate adhesive layer EXTERIOR GRADE: Once installed, material can handle wide temperature fluctuations in weather SIMPLE TO CLEAN: Material easily wipes clean with a damp cloth or sponge, making for hassle-free maintenance CONTAINS: Letters (A-Z), Numbers (0-9) & symbols