April 14, 2025 Gradus - Wall Strips WST150 and WST200 Wall Strips are a cost effective alternative to wall guards where medium duty protection is required against impact, abrasion and scrapes from both wheeled and pedestrian traffic plus damage caused by chairs and tables or other moveable WST150 and WST200 Brochure BoQ Specification PSA 83 (April 2025) Comprehensive Specification PSA 83 Installation Information