Rawlplug R-FF1-N Universal Frame Fixing - Countersunk - Zinc Universal frame fixing, countersunk zinc plated screw for many applications. The countersunk plug for flush fixing of soft material (eg. timber) Specially-formulated nylon allows best performance installation for use in all base material categories according to ETAG 020 (A, B, C, D) Internal plug geometry designed to fit the screw head Plug design ensures multi-axis expansion Applications Door and window frames Garage doors Gates Industrial doors Facade (substructures made of wood and metal) Wall cabinets Satellite dishes Shelves Handrails Cable trays Base Materials Concrete ≥ C12/15 (Use category A) Solid Brick (Use category B) Solid Sand-lime Brick (Use category B) Hollow Brick (Use category C) Hollow Sand-lime Brick (Use category C) Hollow Lightweight Concrete Block (Use category D) Aerated Concrete Block (Use category D) Cracked concrete ≥ C12/15 (Use category A)