New 27" Double Walled Chrome Straight Stack Fits Case-IH Tractor ModelsOne New Aftermarket Replacement 27" Tall Double Walled Chrome Straight Stack (with 3 1 2" OD) that fits the following brands & models: Fits IH Fits FARMALL models: 300, 350, 400, 450, 460, 544, 560, 606, 656, 660, 706 (with 282 Diesel Engine), H, Super H, HV, Super HV, I 4, I 6, ID 6, M, Super M, MD, Super MD, MDV, Super MDV, Super MTA, Super MV, W 4, Super W 4, W 6, Super W 6, W 400, W 450, WD 6, Super WD 6, Super W6 TA Fits Massey Harris models: 20,