perforated diffuser suited for supplying cooled and heated air
perforated diffuser suited for return air
perforated diffuser suited for supplying /returning poured concrete version
perforated diffuser for supplying cooled and heated air
perforated diffuser for return air, tee-bar mounted
perforated diffuser, for supply, tee-bar mounted
perforated diffuser, return air for tee-bar mounting
perforated diffuser for return air, non-vision, light tight
perforated diffuser, removable fae plate for supply air in tee-bar mounting
perforated diffuser, removable face plate for return air, tee-bar mounting
perforated diffuser for suppply air, tee-bar mounted
vertical down flow ceiling diffuser for supply air, tee-bar mounted
