RTF Manufacturing is Your Source for Custom Designed Walk-In Coolers, Cold Rooms / Warehouses, Freezers and Beer Caves—Built to Fit Your Plans. Our Walk-in Coolers and Freezers save energy costs and meet all building code requirements including UL Standards for safety and performance. RTF superior designs keep your operating costs to a minimum. / Built to Suit Your Needs / Superior Design / Durable/ Energy Efficient Ask About Leasing