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COL-MET began as Oak Cliff Metal in 1957 and primarily manufactured building products for Dallas-Ft.Worth-area contractors and businesses. On February 4, 1958 James Collier Sr. obtained a patent for galvanized clip edging beginning a new chapter for the company. In the early 1970s, at the request of local nurseries, Oak Cliff Metal began manufacturing galvanized sign holders. Oak Cliff Metal moved to Garland, Texas in the 1980s and transformed into Collier Metal Specialties. COL-MET then began producing stake type steel lawn edging at the request of their existing nursery and landscape customers to offer professionals an affordable, long lasting solution to retain mulch, rock, and stone in various landscape designs. The headquarters moved to their present location in Garland,Texas, in the late 1990s and now has expanded production capabilities and a 125,000-square-foot manufacturing facility.

COL-MET is the largest manufacturer of steel landscape edging and galvanized nursery sign holders in the industry. COL-MET offers steel lawn edging and accessories for retail and for landscape contractors, as well as a full line of galvanized steel sign holders for retail garden centers. COL-MET offers commercial tree rings and a complete line of edging accessories to help with installation and limitless design opportunities. COL-MET products are commonly specified by landscape architects around the country. COL-MET Steel Landscape edging products are available in a variety of heights, thicknesses and finishes.

COL-MET sign holders are made with prime galvanized steel for indoor or outdoor use. Durable galvanized steel and riveted construction will keep the sign holders usable and looking good for years. COL-MET also manufactures a variety of special purpose sign holders designed specifically for garden centers. From botanical plant markers to custom retail sign holders, COL-MET has the capability to produce a sign holder to exact specifications. They offer bedding plant signs, poster holders, table top sign holders, as well as face plates, vinyl cards and china markers. All sign holders can be powder coated in various colors for added customization.

COL-MET products can be found throughout the United States and Internationally.

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