Structural retaining walls are where Keystone began. Forty-plus years later, the brand is still trusted by engineers, architects, and contractors for everything from backyard garden walls to DOT-approved highway projects — and the residential lineup at Powell.
Keystone is the wall-systems specialist of the major hardscape brands. The lineup leads with structural and landscape retaining walls, with a coordinated paver collection and outdoor-living modular kits — every product engineered for freeze-thaw, every wall designed with the KeyWall® system.
Keystone's flagship category — Country Manor, Stonegate, Harington, Compac, Legacy Stone, Regal Stone Pro. Garden walls, sitting walls, structural retaining walls up to commercial heights with proper engineering and reinforcement.
Browse Walls
CityStone™ Demi/Supra, Holland Stone, Panorama™ Demi/Supra, Plaza Stone (Combo / Squares / Rectangles / Circle), Colony Cobble — the New England paver lineup, engineered for freeze-thaw and designed to pair with Keystone walls.
Browse Pavers
Country Manor 3-PC modular kits for fire pits, outdoor kitchens, columns, benches, and freestanding walls. Plus Stonegate No-Cut Designs — pre-engineered patterns for contractors to build complete outdoor living spaces fast.
Browse Outdoor LivingKeystone didn't start in the backyard. The brand's first wall went up as a structural engineering solution — the kind that holds back a hillside or supports a highway. Forty years later, you'll still find Keystone walls behind department-of-transportation projects, commercial sites, and major municipal infrastructure across North America.
That commercial DNA shows up in every residential Keystone product. The Pin System® fiberglass connectors that lock each course in place; the engineered Tri-Plane geometry that gives Compac walls their setback automatically; the KeyWall® PRO design software architects use to spec walls — all of it works the same way whether you're building a 3-foot garden wall or a 30-foot reinforced structural wall.
Keystone publishes regional catalogs every year for each manufacturing region. The Boston/New England catalog is the one for Massachusetts, New Hampshire, and the rest of our region — only the products Powell actually stocks, plus the supporting technical guides.
The flagship Keystone catalog for our region — every paver, wall, and outdoor living product Keystone manufactures for the New England market. Pavers, structural walls, landscape walls, fire pit kits, and the full Country Manor modular system.
The full commercial paver and wall lineup — CityStone, Granette Setts, Holland Stone, Panorama, Venetian, Verona, plus permeable pavers and commercial-grade wall systems. Pulls from real project case studies with architect and contractor credits.
Full technical specs for paving stones and retaining walls — dimensions, weights, compressive strength, freeze-thaw ratings, installation details, and the application key for every product Keystone manufactures. The reference contractors keep on the truck.
Eco-CityLock®, Eco-Panorama™, Grasstone™ II — Keystone's permeable paver lineup for stormwater management, town drainage requirements, and LEED-credit projects. The eco-friendly answer when surface runoff is restricted.
All Keystone resources open on keystonehardscapes.com — view, download, or print.
Six product lines pulled from the Boston/NE catalog — Keystone's flagship walls plus the bestselling pavers in our region. Walls lead the lineup because that's where Keystone leads the industry; pavers complete the system.
Keystone's flagship three-piece modular wall — six face dimensions from three units. Builds retaining walls, freestanding walls, columns, fire pits, outdoor kitchens, and benches from a single product family. The dry-stacked Old World look with engineered Pin System reliability.
The refined sibling of Country Manor — same modularity, smoother face, weathered cut-stone appearance. Available in Old World (textured) and Contemporary (smooth) finishes. Reaches three feet gravity, more with geosynthetic reinforcement. The wall when you want Country Manor's flexibility with a more polished look.
The structural workhorse — Compac III's patented Tri-Plane Hi-Lo profile gives walls their setback automatically. Split or Victorian face, straight or curved layouts, single-pin or double-pin systems. The wall that engineered Keystone's reputation and still gets specified on commercial and residential projects alike.
A tumbled, weathered-look wall block in a single repeating unit — fast to install, predictable to estimate. The simple answer for straightforward landscape walls and garden walls where Country Manor's modular complexity isn't needed. Available regionally.
Keystone's classic DIY-friendly wall blocks — simple shape, lightweight units, easy to install in straight or curved layouts. The garden wall pros recommend for homeowners and the wall first-time installers can actually finish over a weekend.
Keystone's modern modular paver — clean lines, large-format options, generous chamfers that prevent lippage even in non-planar installations. Available in Demi, Supra, and XL sizes, in heights that suit both pedestrian and vehicular traffic. The paver Keystone leads with in every regional catalog.
Keystone walls are an engineered system — the right cap, the right pin, the right product for the right height. Powell stocks the Boston/NE Keystone lineup at three yards, delivers next day, and knows which wall product fits which job. Plus the full Country Manor modular kits for outdoor living builds.
Lunenburg MA, Winchendon MA, and Brookline NH. Keystone wall and paver inventory stocked and ready for pickup or delivery across central Mass and southern New Hampshire.
Order today, jobsite tomorrow. Full pallets, half pallets, and split-cube deliveries to contractors and homeowners — including Country Manor 3-PC kits for outdoor living projects.
Authorized Keystone Hardscapes dealer — Powell stocks the current Boston/NE catalog with manufacturer-direct pricing, full sample boards, and pin/cap inventory for every active wall system.
Walk the wall pallets, see the textures in daylight, talk through your project with someone who knows the difference between a gravity wall and a reinforced wall. Engineering questions welcome.
The 2026 Boston/NE catalog covers every Keystone product Powell stocks. But walls especially are best seen in person — the texture, the scale, the way the colors actually weather. Bring your project specs or just an idea, and we'll pull the sample boards.
