We build all of our racks in house. They are engineering complete with an engineer stamp if you require documentation. We build racks for 110 LTR, 225 LTR, 500 LTR pungent, or any custom rack that you may want built. Our aluminum racks are pleasing to the eye, never need painting, weigh 29 lbs, and are guaranteed for life. Steel racks weigh 49 lbs. I am quite certain there have been a few strained backs while moving these racks or it is a 2 person job. Our racks significantly reduce WSIB claims and your workers would be much happier.