USC S-902 - 9 3/4 X 12 1/4" TAB LOCKING WHITE STAYFLATS #5 - FIRST CLASS PRESENTATION GUARANTEED. NO TAPE OR STIFFENERS NEEDED. WILL NOT BEND OR CRUSH. SELF-LOCKING FLAP SECURES SHIPMENTS. THICKNESS:. 028" SEMI-GLOSS COATING.. RECYCLED CONTENT: 100%...