Stern Backbox and Cabinet Vent Grill - 3" x 18"
Ships from US and is sold by Pinball Life$4.85
Vent grill used on Stern cabinets and wooden backboxes. Possibly used on Data East and Sega machines as well.
Stern manuals describe this as measuring 2-1/2" x 18", but the actual measurement is 3" x 18".
Stern #545-5072-02.