Run down on it. Cross air flow sucking air out of the case. Reason, less noise and equalized pressure across the filter face. Fans are located so as to supply air flow across ram, heat sink and mofsets as well as aid in pulling air out of case at heatsink exit. Psu will aid in hd cooling. Filters are standard furnace 16 x 20 from first layer to top layer. Not visible in the pics is the right side hold down for the filters. Left side hold down is fixed. Case is on casters. All fan grills are black and will be installed at the end. Black grills are intended to tone down the function of the case as it is in the living room. Filters are on the right side as the case will be located on the right side of the room and this obscures them from view. Given the surface area and number of fans the living room should be pretty dust free. Filters are cheap, readily available in a number of flavors and easily changed out not to mention allowing for tremendous filter surface area. Each layer slides out for servicing. Each layer will have a momentary switch located on the individual boards layer in order to further eaze layer slide out access. Case without caster is 72" tall with layers at 7". I presently have 6 boxes folding with 2 on standby for the new case. One will stay in the boys room so the case will start with 7 layers occupied leaving room for 3 folders. Fans are all 28db due to the potential for extreme noise and I will adjust this accordingly. One does not generally sleep in the livingroom but one does desire to watch tv. I do need to drop another breaker/outlet or two to support the power requirements of the case. Cost will be just under $100 completed. Mostly due to hardware, stain and lacquer. Sanded the case with 60 grit today, installed the glass panes in the door and did a little more filler work. Tommorow, temperature dependant, I will sand 150, 220 and possibly stain. If it is too cold then the case may be on hold till the next warmish day. Take Care one and all.