Specifically designed to double production capabilities when printing sleeves or pant legs. This 16" x 20" platen has three print areas. The center appendage measures (13 ½ x 4 ¼) & the outer appendages measure (13 ½ x 3 5/8), making it great for printing both sleeves and the collar area of a shirt in one press. Includes two Quick Slip Platen Protectors. It is compatible with the STX 16" x 20".