Sliding Door Track Roller Wheel 68-79. 211-843-359B 211843359B Was £20.00 - Now £18.00! inc. VAT (where applicable) Quantity: at £18.00 each Add To Basket Sliding door roller wheel, fits all Bay window. Top quality part. This is the roller wheel at the rear of the door, half way up, tends to wear and eventually break in half.