Aviditi MAL12112 Corrugated Side Loading Locking Mailer, 12-1/8" Length x 11-5/8" Width x 2-5/8" Height, White (Bundle of 50) Side loading design makes packing easy Close these one-piece mailers with their locking tabs Attractive 200#-B/ECT-32 white corrugated makes a favorable impression Measures 12-1/8-inches length by 11-5/8-inches width by 2-5/8-inches height