What people use them for
Material bins
Three-sided bays for gravel, sand, soil, bark mulch and salt — easy to move or extend later.
Walls & terracing
Gravity walls, terraces and slope support on farms, acreages and industrial lots.
Site barriers
Perimeters, traffic control and security barriers on job sites and parking lots.
Bases & ballast
Anchors and ballast for signs, tents, fencing and temporary structures.
Spec: 2.5′ × 2.5′ × 5′ · ≈ 4,400 lb each · new and used · stackable (key on top, groove underneath). Each block covers 5 ft of wall length per 2.5 ft of height.
Questions
What size are your lock blocks?
Our standard block is 2.5′ × 2.5′ × 5′ (2.5 ft high, 2.5 ft deep, 5 ft long) and weighs ≈ 4,400 lb.
Are lock blocks the same as lego or ecology blocks?
Yes — lock blocks, lego blocks, ecology (eco) blocks and concrete interlocking blocks are names for the same kind of stackable precast block with a key on top and a groove underneath.
New or used?
Both. Used blocks are structurally sound with cosmetic wear and cost less; new blocks have clean faces for visible walls. Tell us what it's for and we'll suggest the right mix.
Do you place them?
Yes — every order is delivered and set in place by K2 Crane & Cartage's crane trucks, so there's no need for your own equipment on site.
Do I need a permit?
In BC, retaining walls 1.2 m (4 ft) or taller usually need a building permit and a design by a professional engineer, and some municipalities restrict lock-block walls next to roads. Check with your city before building. This is general information, not legal or engineering advice.