Pinit FILLER PAD for Stayflats Lite Rigid Mailers. 12-3/4 x 10-3/4" 1/8" thick, 200 -lb-test Kraft corrugated cardboard. SKU: F1311 (0)No Reviews yet Add to Shopping Cart Details FILLER PAD for Stayflats® Lite Rigid Mailer 12-3/4 x 10-3/4" 1/8" thick, 200-lb-test corrugated cardboard. Fits in Stayflats™ Lite rigid mailer, Code:... Details Back DetailsFILLER PAD for Stayflats® Lite Rigid Mailer 12-3/4 x 10-3/4"1/8" thick, 200-lb-test corrugated cardboard. Fits in Stayflats™ Lite rigid mailer, Code: MSF1311. Reviews 0 Back Ratings & ReviewsNo reviews availableBe the first to Write a Review