Ensure the contract mentions installation according to ГОСТ 34378-2018 (or the updated 2024 equivalent).
Specifies the contractor's liability for damaging walls, furniture, or failing to meet deadlines. 3. Essential Attached Documents dogovor montazh plastikovye okna
Specifically details the manufacture, delivery, dismantling of old windows, and installation of new PVC windows, including windowsill and drainage components. dismantling of old windows
Signed by both sides to prevent disputes over window sizes. and installation of new PVC windows
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