Folding door models have three types. The first of the folding door models is normal folding doors. Fast folding PVC doors are quite common products. It is designed in proportion to the desired dimensions of the doors and can be used both outdoors and indoors. These models of folding doors have window openings, which can be changed optionally. A different model is the mini hangar door. Wind resistance is one of the most basic elements in folding door models designed as double-deck. This model, supported by aluminum bars, has a tarpaulin support. Observation windows are also included in this product, but it should be noted that this negatively affects wind resistance. Another model is the mega hangar door model. Mega hangar door double-deck folding door models are designed to be wind resistant. In this model with metal parts, horizontal rather than vertical reinforcement was preferred. This design is resistant to wind pressure up to 130 km/h.