These are intended to be mounted vertically as drawer slides If you lay them flat the maximum load will be about 150 lbs. Profile is 3" tall and 3/4" wide. Great for mounting small gen set or welder. Mount toolbox or even make heavy duty drawers... I have listed 1 pair, 2 pair or 3 pair...I will keep you informed with Tracking info. The item "600 lb, 30 Open to 60 Ball Bearing Slides. 3 PAIRS (6 slides)" is in sale since Friday, December 7, 2018. This item is in the category "Home & Garden\Home Improvement\Building & Hardware\Cabinets & Cabinet Hardware\Drawer Slides". The seller is "buddsales" and is located in Fort Worth, Texas. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Brazil, Chile, Colombia, Costa rica, Dominican republic, Panama, Trinidad and tobago, Guatemala, El salvador, Honduras, Jamaica, Viet nam.