Description Reviews JD 4030 - 4630 PROFORM LH UNDER SEAT PANEL FITS: 4030, 4230, 4430,4630 This part comes in 2 pieces: the main under seat panel, and a small, rectangular panel that is installed below the front edge of the seat and faces toward the front. *1975 IS THE SPLIT* SPECIFY CAB SER. # <= 63,624 CAB S.N. IS LOCATED ABOVE LH DOOR. ProForm acoustical interior upholstery lower kit, pre-assembled onto plastic panels, and adhered into cab with a supplied repositionable adhesive for a much simpler installation.