I have been involved in all facets for 40 years + in the HVAC Contracting / Supplier business. I found Quick Frames almost 10 years ago and have specified them, used them and recommend them whenever I can. The product is absolutely the easiest solution to supporting the equipment on the roof, the quality is superior. The staff is by far the best! Orders always arrive on time. I can't say enough good things about the product and company.