Search for Serial # in another sheet and then copy from row below

In the attachment you will see a tab "Summary Info" and in the A column there are Serial Numbers. I would like to look up the serial number in the "Summary Info" sheet on the "Maint_Info" sheet and look across into the "Pro-Rated Thru Maintenance $" column and pull the cell right below it. So for example, if I lookup serial number "355252" on the "Maint_Info" sheet, I would like it to copy " $21,886.00" into D2 on the "Summary_Info" sheet. Thanks in advance.