Window frame fixing F-S is suited for window & door frames. The nylon fixing offers stress-free and stand-off installations. The F-S is a specific plug for installation works. The plug comprises high-qualify nylon and countersunk head screw. Also, the F-S offers a fast push-through installation. The fixation is free from pressure and tensile force. It ensures a secure hold in the building material. The materials include concrete, hollow blocks, aerated concrete and solid brick etc. Safety, easy installation and reliable fixing are the key aspects here.