UCA82316 Seat Bottom---Black Vinyl---Steel Back

Replaces number 6144

Fits: 210B, 300B, 310B, 320B, 400, 44B, 410B, 420B, 430, 440, 470
500B, 530, 540, 600B, 630, 640, 700, 730, 800, 830, 840, 900, 930, 940