We use special auto stretch frame system to stretch canvas on frames. Our wooden frames have specific sizes listed in our price list.
150cm = 59in. Frame size is 60in (152.5cm) and canvas should have the size 64″ (165cm). The smaller frame size we have is 48″ which is much smaller than 60″.
The other size could be 36″ (91.5cm) and 4″ + 4″ will go to wrap a frame. So the problem is only with the longer size.
You can purchase 60″x36″ frame for $100 but you have to make 60″ frame 4″ shorter (circular angle saw required).