Acrylic Sheet 4X4 inchHigh Quality: These 2mm thick cast acrylic sheets have outstanding strength and optical clarity. These sheets are shatter proof, stronger than glass, offers high levels of abrasion and shock resistance. Incredibly versatile: Can be used for picture frames, craft projects, laser engraved signage, hobby display cases, home dcor, shelving, displays and signage for wedding, party, store, small business and more. Protection: Protect your important work