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compac units
The #1 commercial retaining wall product on the market, the Keystone Compac unit is an installer’s favorite. Featuring an open core design and the pin connection system that is trusted by engineers and contractors around the world, the Keystone Compac is lighter weight than other structural blocks and has a shortened tail design that makes it easier to handle and perfect for projects that do not require the embedment length of the Keystone Standard unit. In addition to the traditional sculptured/tri-planar and straight-face face styles, the Keystone Compac is now available in a variety weather finish options including the new Hewnstone face.

Victorian Logo

Keystone Compac units can also be manufactured as Victorian Stone units. Contact your local Keystone representative for product availability.

Sculpterra Compac



  original series II series III
height 8" 8" 8"
width 18" 18" 18"
depth 12"
12" 12"
weight • tri-plane 80-90 lbs 76-81 lbs 67-72 lbs
weight • straight 85-95 lbs 84-89 lbs 71-76 lbs
pins yes yes yes
Product size, weight, color and product availability varies by location.
Please contact your local manufacture for up to date product information.
Downloadable Specifications:
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The following are typical cadd details to assist you when designing your site. Keystone's Engineering department welcomes any comments and are ready to assist you with any questions you may have. The downloads below are available in either AutoCad or Acrobat PDF formats.

You can download Acrobat Reader free of charge from Adobe.com.

For best DWG printing results in AutoCad®, use the Keystone2001.ctb plot file from this link.

Downloads: (DWG) Downloads: (PDF)


Compac logo The following instructions can be used for the
Keystone Standard, Compac, and Victorian Stone units.
step 1 step 2 step 3
STEP ONE | Prepare the base leveling pad. Remove all surface vegetation and debris. More ... STEP TWO | Install & level the base course. Place the first course of units. More ... STEP THREE | Insert the fiberglass pins. Place the pins into the holes. More ...
step 4 step 5 step 6
STEP FOUR | Install core fill & compaction. Provide crushed stone drainage fill. More ... STEP FIVE | Install additional courses. Place the next course of units over the pins. More ... STEP SIX | Capping the wall. Continue all steps until ready to place the wall cap. More ...
Geogrid Installation More ...    
Compac logo Click on a unit to view its 360° view. seriesII victorian hewn