B1 Sliding Anchors are used in conjunction with OWT and TWT ties to tie the inner and outer leaf to structural steelwork or concrete where a movement joint is required. They provide lateral restraint while allowing vertical movement. The B1 anchor is positioned within the cavity and fixed through either a 7mm or 10mm hole to the underside of the structure and sliding ties positioned to suit the wall coursing. A range of standard sizes are available but can be manufactured to suit customer requirements. Manufactured by ACS Stainless Steel.