Pinit Multi-Depth Mailer. 9-1/8 x 12-1/8". Kraft corrugated cardboard. Variable Depths 1/2", 3", 3-1/2", 4." For thicker books up to 4". SKU: MMD9122 (0)No Reviews yet Add to Shopping Cart Details Multi-Depth Mailer 9-1/8 x 12-1/8" inside dimensions Variable Depths at 1/2", 3", 3-1/2", 4." Use for mailing thicker books or multiples of similar-si... Details Back DetailsMulti-Depth Mailer 9-1/8 x 12-1/8" inside dimensions Variable Depths at 1/2", 3", 3-1/2", 4."Use for mailing thicker books or multiples of similar-sized items. Made from 200-lb-test corrugated cardboard. Reviews 0 Back Ratings & ReviewsNo reviews availableBe the first to Write a Review