How to Fix Alexi WPC Frame on Wall?
Corner Joint
Cut the Frame on Each Side at 45 Degree Angle and insert Screw to joint the corner at 45 degree angle.
Alternatively Cutting Frame on each side at 90 Degree Angle and inserting screw to joint at 90 Degree Angle.
Fixing with Wall
Fix the Frame to the wall with wallplugs and Screw.
Alternatively Fix the frame to the wall with Z Steel Andle back to frame fixing and insert inside wall.