S K Metal Works manufactures Plastic Front Home UPS with Folding Trolley. S K Metal Works is an ISO 9001:2000 certified manufacturer and supplier of sheet metal cabinets and Plastic Molded Panels. The Plastic Front Home UPS with Folding Trolley is offered in H.145 mm x W.390 mm x L.300 mm and H. 375 mm x W. 550 mm x L. 340 mm sizes. This also comes with Single Battery Fully Metal Inverter.