193-8 Economical Enclosure 8" made by Atlas Sound is a low cost but efficient enclosure that can accommodate an 8" diameter of loud speakers and standard screw-mount baffle installation. This model has four compound conduit knockouts. Its finishing is made of black enamel and is undercoated to prevent mechanical and acoustical resonances. For easy installation, the design includes slotted mounting holes that is compatible with 180 Series support rails.