ORCO Retaining Walls
Explore ORCO retaining wall systems available to order through Simi Pacific Building Materials. Choose from a variety of styles, sizes and colors for landscape walls, garden walls and retaining wall applications.
Available to Order • Not Stocked On-Site
ORCO Retaining Wall Options
ORCO manufactured segmental retaining wall (SRW) products beautify residential landscapes. As a licensed manufacturer of Allan Block SRWs, ORCO offers a complete line, sized to create unique patterns using 1, 2, 3 or 4 different block sizes, in blends and solid colors with a wide variety of segmental wall finishes. Also engineered for commercial applications.
AB Abbey Blend Collection
Four Allan Block Europa unit sizes you can mix in one wall for a rich, hand-laid Old World look. Matching caps and corners available.
Colors: Versante, Borrego, Tuscany, Manor
Available to Order — not stocked on-site. Contact Simi Pacific for current lead times.
AB Ashlar Blend Collection
Four Allan Block unit sizes blended into a classic cut-stone ashlar pattern, or built with a single size. Matching caps and corners available.
Colors: Versante, Borrego, Tuscany, Manor
Available to Order — not stocked on-site. Contact Simi Pacific for current lead times.
AB Stones
Product photo coming soon
AB Stones
Allan Block’s signature full-size wall block — one easy-to-stack unit, split-face, with a 12° setback for straightforward garden and retaining walls.
Colors: Tan, Natural Gray
Available to Order — not stocked on-site. Contact Simi Pacific for current lead times.
AB Rocks
Product photo coming soon
AB Rocks
A full-size wall block with a chiseled, rounded rock face that reads like a natural mountainside, built with a 6° setback.
Colors: Tan, Natural Gray
Available to Order — not stocked on-site. Contact Simi Pacific for current lead times.
Available to Order — Not Stocked On-Site
AB Abbey Blend Collection
The AB Abbey Blend Collection combines four Allan Block Europa wall unit sizes — Dover, Palermo, Barcelona and Bordeaux — with matching Europa caps and corners, so a wall can mix 1 to 4 different sized block for a blended, dimensional face. Like all ORCO Allan Block products, it is available to order through Simi Pacific and is not kept in yard stock.
Available Colors
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Available to Order
Versante
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Available to Order
Borrego
-
Available to Order
Tuscany
-
Available to Order
Manor
Unit Options
- AB Dover, AB Palermo, AB Barcelona and AB Bordeaux wall units — use one size or blend up to four
- AB Europa Caps to finish the top of the wall
- AB Europa Corners for outside corners and returns
Specifications
View Full Specifications
| Name | Setback | Coverage | Approx. Weight | Approximate Dimensions |
|---|---|---|---|---|
| AB Dover | 6° | 1 sq ft. approx. | 80 lbs | 8 in. H x 10.5 in. D x 18 in. L |
| AB Palermo | 6° | 0.5 sq ft. approx. | 35 lbs | 8 in. H x 9.5 in. D x 9 in. L |
| AB Barcelona | 6° | 0.5 sq ft. approx. | 40 lbs | 4 in. H x 10.5 in. D x 18 in. L |
| AB Bordeaux | 6° | 0.25 sq ft. approx. | 20 lbs | 4 in. H x 10.5 in. D x 9 in. L |
| AB Europa Caps | – | 0.73 sq ft. | – | 3.75 in. H x 8.88 in. D x 11.75 in. L |
| AB Europa Corners | – | – | – | 8 in. H x 8 in. D x 16 in. L |
Finish: Split face with aged treatment · Edge: Cut
Approximate weights are Allan Block’s published figures. Actual dimensions, weights and setbacks vary by manufacturer — contact Simi Pacific to confirm before ordering.
Available to Order
Available to Order. Not stocked at our Simi Valley yard. Contact Simi Pacific for current colors, quantities and lead times.
Available to Order — Not Stocked On-Site
AB Ashlar Blend Collection
The AB Ashlar Blend Collection combines four Allan Block unit sizes — AB Classic, AB Jumbo Junior, AB Lite Stone and AB Junior Lite — with matching AB caps and corners, so a wall can be built with one block size or blended for more texture and a classic cut-stone look. Like all ORCO Allan Block products, it is available to order through Simi Pacific and is not kept in yard stock.
Available Colors
-
Available to Order
Versante
-
Available to Order
Borrego
-
Available to Order
Tuscany
-
Available to Order
Manor
Unit Options
- AB Classic, AB Jumbo Junior, AB Lite Stone and AB Junior Lite wall units — use one size or blend all four
- AB Caps to finish the top of the wall
- AB Corners for outside corners and returns
Specifications
View Full Specifications
| Name | Setback | Coverage | Approx. Weight | Approximate Dimensions |
|---|---|---|---|---|
| AB Classic | 6° | 1 sq ft. approx. | 75 lbs | 8 in. H x 12 in. D x 18 in. L |
| AB Jumbo Junior | 6° | 0.5 sq ft. approx. | 35 lbs | 8 in. H x 9.5 in. D x 9 in. L |
| AB Lite Stone | 6° | 0.5 sq ft. approx. | 35 lbs | 4 in. H x 12 in. D x 18 in. L |
| AB Junior Lite | 6° | 0.25 sq ft. approx. | 18 lbs | 4 in. H x 12 in. D x 9 in. L |
| AB Caps | – | – | 55 lbs | 4 in. H x 12 in. D x 18 in. L |
| AB Corners | – | – | 55 lbs | 8 in. H x 8 in. D x 16 in. L |
Finish: Split face · Edge: Bevel
AB Stones and AB Rocks are separate Allan Block wall units, not part of the Ashlar Blend. They can be ordered on their own — see AB Stones and AB Rocks.
Approximate weights are Allan Block’s published figures. Actual dimensions, weights and setbacks vary by manufacturer — contact Simi Pacific to confirm before ordering.
Available to Order
Available to Order. Not stocked at our Simi Valley yard. Contact Simi Pacific for current colors, quantities and lead times.
AB Stones
Product photo coming soon
Available to Order — Not Stocked On-Site
AB Stones
AB Stones is Allan Block’s signature full-size wall block and the simplest way to build a basic garden or retaining wall — one block size, easy to stack, with a split-face texture and beveled edge. Its 12° setback leans the wall back as it goes up, which is what gives an AB Stones wall its leverage and stability. Ordered through Simi Pacific and not kept in yard stock.
Available Colors
-
Available to Order
Tan
Photo coming soon
Tan
-
Available to Order
Natural Gray
Photo coming soon
Natural Gray
Specifications
View Full Specifications
| Name | Setback | Coverage | Approx. Weight | Approximate Dimensions |
|---|---|---|---|---|
| AB Stones | 12° | 0.93 sq ft. | 75 lbs | 7.63 in. H x 11.75 in. D x 17.63 in. L (8 in. x 12 in. x 18 in. nominal) |
Finish: Split face · Edge: Bevel · Pattern: Stacked
Approximate weights are Allan Block’s published figures. Actual dimensions, weights and setbacks vary by manufacturer — contact Simi Pacific to confirm before ordering.
Available to Order
Available to Order. Not stocked at our Simi Valley yard. Contact Simi Pacific for current colors, quantities and lead times.
AB Rocks
Product photo coming soon
Available to Order — Not Stocked On-Site
AB Rocks
AB Rocks is a full-size wall block with a chiseled, rounded rock face and a radius edge, so a finished wall reads more like a natural mountainside than a manufactured block wall. It is built on the same Allan Block engineering as the rest of the line, with a 6° setback for a more upright wall. Ordered through Simi Pacific and not kept in yard stock.
Available Colors
-
Available to Order
Tan
Photo coming soon
Tan
-
Available to Order
Natural Gray
Photo coming soon
Natural Gray
Specifications
View Full Specifications
| Name | Setback | Coverage | Approx. Weight | Approximate Dimensions |
|---|---|---|---|---|
| AB Rocks | 6° | 0.93 sq ft. | 75 lbs | 7.63 in. H x 11.75 in. D x 17.63 in. L (8 in. x 12 in. x 18 in. nominal) |
Finish: Split face · Edge: Radius · Pattern: Stacked
Approximate weights are Allan Block’s published figures. Actual dimensions, weights and setbacks vary by manufacturer — contact Simi Pacific to confirm before ordering.
Available to Order
Available to Order. Not stocked at our Simi Valley yard. Contact Simi Pacific for current colors, quantities and lead times.
Which ORCO Wall Is Right for You?
All four are Allan Block systems available to order through Simi Pacific. The difference most customers notice first is simply how the finished wall looks.
AB Abbey Blend Collection
An aged, blended appearance. Four different unit sizes — Dover, Palermo, Barcelona and Bordeaux — go into one wall for a more traditional, dimensional face.
AB Ashlar Blend Collection
A multi-size system that creates a varied, dimensional wall pattern. Four unit sizes blend into a classic cut-stone look, or the wall can be built with a single size.
AB Stones
A straightforward, classic retaining wall block with a clean split-face appearance. One block size, easy to stack — Allan Block’s signature block for basic wall construction.
AB Rocks
A retaining wall block with a more rounded, natural-rock appearance — a chiseled face meant to resemble a natural mountainside.
Setback is how far each course steps back as the wall rises, so it affects how the finished wall looks. Wall height, drainage and reinforcement should follow your project plans, the Allan Block installation guide, your contractor or an engineer.
Complete Your Wall Project
Supporting materials commonly used to complete a retaining wall project.
Wall Caps
Finish the top of your wall with cap options for a clean, completed appearance.
Drain Rock & Gravel
Drainage aggregate commonly used behind retaining walls to help manage water.
Drainage Pipe
Drain pipe and fittings for retaining wall drainage applications where required by the project.
Gator Block Bond XP
A polyurethane adhesive for concrete block, stone, brick and pavers — commonly used for setting wall caps and steps on compatible block projects.
Need Help Choosing a Retaining Wall?
Not sure which ORCO wall system is right for your project? Our team can help you compare styles, sizes, colors and quantities and place your order.
