Acuity Brands Inc. has introduced the RV Series retrofit commercial LED downlight from Lithonia Lighting. The fixture’s mounting hardware retains and centers the fixture into existing mounting pans, allowing replacement of 8-inch apertures. The one-piece housing and one-piece reflector allow replacement of traditional-source commercial downlights. RV Series LED downlights use common line voltage dimmers,allowing dimming capability without pulling additional wires to the fixtures.