K3PID wrote: >When the R-390/URR is installed in the cabinet does it normally have the top and bottom covers attached? Is there a cooling issue with both? > > > >Tnx >K3PID - Ron H. > Covers are meant only for rack use, Ron - to keep out dust, crud, and potential interference from unshielded areas within the rack. Put 'em in the closet. ~ Boomer KA1KAQ