CST built its reputation on its MONO-CAST™ one-piece construction that guarantees hardscape products with consistent integral color and strength that will last a lifetime.
Massachusetts & New Hampshire's Keystone Hardscaping Supply Company
Keystone Hardscapes® is embracing the needs of owners, developers, architects, designers, contractors, homeowners and other customers in the Mid-Atlantic by aligning CST under its brand. Recognized for manufacturing high-quality retaining walls, CST gains award-winning design innovation, a deeper product offering, robust marketing expertise and world-class customer service as part of Keystone Hardscapes®.
Keystone Compac II
A specifier's favorite, Keystone Compac features unrivaled aesthetic options, cost saving versatility and proven wall performance.
The Keystone Compac Victorian Ashlar combines the versatility of the Victorian Random Score unit and a 4" unit. Multiple ashlar patterns can be achieved with fewer units for a faster and more economical installation.ble in an assortment of colors to match any project!
Keystone’s Verazzo Stone is the perfect blend of rugged good looks, design versatility and strength. Verazzo Stone is available in a three-piece or single unit system (varies by market). Verazzo Stone units are 6-inch high, angled and textured on both sides; making it an ideal solution for 2-sided applications, such as a free-standing wall.
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At Powell Stone and Gravel, we work hard to provide our customers with premium materials, fair prices, and expert know-how.