Established in 1943, Prefraga is a third generation business dedicated to the manufacture of precast concrete. It is the leader in Spain in the manufacture of concrete blocks, pipes, pavers and retaining wall blocks. In 2010, Prefraga became a licensed manufacturer of Anchor™ retaining wall systems.

Anchor retaining wall systems comprise concrete blocks with integral locators that interlock to hold back soil.

Retaining walls are engineered to be built to nearly any height and offer many benefits:

  • cost effective
  • quick to construct
  • proven technology

Manufacturer Locations


Ctra. N-II Km. 443 Apdo. Correos 51
22520 Fraga, Huesca
+34 974 472 645