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If the thickness of the sash is incorrectly selected, the frame begins to sag, the frame is curved, the load…

She breaks. And for comfort in the house they install, which will provide comfort and comfort.

The windows are difficult to open, close, the cracks form, the handles are sunk.

They are at the bottom of the frame.

All mechanisms of accessories must also be lubricated once a year and even more often.

Given all points, rubber seals will retain elasticity and will not dry out.

They also need to be wiped with a rag dipped in a lemon solution, and then cover with silicone lubricant.

She will lose her shine, and then whiteness, will become matte.

They should not have chlorine. You do not need to use gasoline and acetone to remove fat spots.

When caring for frame constructions of PVC, you need to use special detergents.