White wove finish with blue security tint. SECURITY TINT: Yes. # OF ENVELOPES: 500. WINDOW SIZE 1: 1-3/16″H x 3-1/2″W (3/8″ from left, 2″ from bottom). WINDOW SIZE 2: 1″H x 4″W (3/8″ from left, 1/2″ from bottom).