The AHR-S is used to restrain the inner leaf of a cavity wall. The head is designed with a 7mm or 10mm slot for fixing to either the under side of steelwork or concrete and allows differential movement between inner leaf and the structure. Mortar is prevented from entering the AHR to ensure that vertical movement can take place. The foot of the AHR is bent to allow it to anchor under the blockwork. (S/S Sliploc Version Assembled Suitable for 215mm Block Grade 304). Manufactured by ACS Stainless Steel.