Plastic bifold door can used for interior or exterior while water-proof design adopted.
Do not buy cheap model upvc door window.
Focus on glass and hardware.Glass should be flat, without water lines.
Glass and plastic profiles are not in direct contact, there is a sealing strip close to the gap.
Complete hardware, correct position, firm installation, flexible use.
Doors and Windows should be smooth and flat surface, no open welding fracture.
The sealing strip should be smooth, no winding, no grooving, no odor.
When plastic bifold door are closed, there is no gap between the fan and the frame.
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