\"Strong absorption capacity: baffect glass cleaner is effective for single and double glazing with a thickness of 18 to 30 mm. You can easily clean the inside and outside of the window while standing in the house. Clean double glazed windows at the same time: Stay in the room to clean the inside and outside of the window at the same time thanks to the magnetic design. Perfect for windows in houses, greenhouses, car windows, sunrooms, etc. Measure the thickness of the glass before purchasing. Measure the total thickness of the window frame and the outer and inner thickness of the window frame. The actual thickness of the window glass = the total thickness of the window frame - the outer thickness of the window frame - the inner thickness of the window frame Super quality: Ultra-strong ABS, ferro-boron alnico and rubber band. It is practical, solid, drop-proof and durable. Be careful not to pinch your fingers during use, this is very, very important. Product size (L*W*H): 16*13.5*7 cm. The window cleaner is suitable for single and double glazing with a total thickness of 18 to 30 mm and not for triple glazing. If you are unsure about the thickness of your window, we recommend choosing the adjustable magnetic window cleaner from 4 to 30 mm.\"