We have purchased this kind of item in the past and believe there is no other way to do so that is as simple and inexpensive as through Appliance Factory Parts.
Media shield-right-for: ada/asa/aua51
(s) .28-131, evap media shield-right 51 series. $23 an oversized shipping charge is being added to retial price to cover oversized shipping. if being picked up give $23 off retail.
Buy this part and as many parts as you like and pay only $9.99 shipping, within the Contiguous United States.