Item Details: *5Pcs Pre Filters Prefilter For 491588 Air Filter 491435 *Suitable for Air Filter 491588 491588S 399959 *Replacement OEM #:271933 491435 491435S 493537 493537S *100% brand new and high quality *Material: Sponge *Color: As Pictures Show *Quantity: 5pcs Package Contents: 5*Prefilters Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data.