15″ x 20″ x 4″ – White. 4″ x 6″ – Clear Face Envelopes. 6″ x 6″ – Clear Face Envelopes. 6″ x 9″ – Clear Face Envelopes. 4.5″ x 5.5″ – Panel Face Enclosed. 4.5″ x 6″ – Panel Face Enclosed. 7.5″ x 5.5″ – Panel Face Enclosed.