An assembly is set of manufactured parts or components that work together in unison as one mechanism or device. A baffle is a device used to dampen the effects of such things as friction, sound, light, or fluid. Specifically, a baffle is a surface which is placed inside an open area to inhibit direct motion from one part to another, without preventing motion altogether. Features. OEM Baffle Assembly. Made with high quality materialSpecifications. Length 20.2 in.. Width 21.13 in.. Height 2.75 in.