Note: This Grass Trail Shield is 1/4 inch shorter in length and 1 inch shorter in width than the 3126391001 you purchased. We are sorry for the deviation when the factory made it. We will clear the stock at a low price. To a certain extent, this will not affect the use. Thank you for understanding! Part Number: 3126391001 Compatible with: LM2100, LM2100SP, LM2101, LM2102SP, LM2140SP and LM2142SP, Does not fit LM2100SP Compatible with Grass Trail Shield for most EGO Power+ 21″ Lawnmowers The number of products is shown in the picture, please pay attention to the actual quantity you need to purchase