Our added value
Good products alone are not enough for us. We attach great importance to good service: starting with an individual consultation to the installation of all windows and doors by our qualified teams. However, the tasks for us are far from being fulfilled with the installation. Our exclusive maintenance service, which we are happy to offer our customers on request, carries out regular and professional control and care activities. And for all operations in between, we have our own in-house customer service.
Would you like to hear more about our products, our maintenance service and all the current OST news?
- Prices for more than 35 windows on request
- The first date of maintenance in compliance with the contract must be carried out at least 1 year after the free maintenance or a chargeable initial inspection of the elements
- If maintenance is wished for windows plus a house door, the door counts as much as two additional windows
|Number||Service||Fixed fee||Total w/o VAT||Total incl. VAT|
|1 front door only||59,79 €||12,00 €||71,79 €||84,00 €|
|1-5 windows||59,79 €||12,00 €||71,79 €||84,00 €|
|6-10 windows||85,44 €||12,00 €||97,44 €||114,00 €|
|11-15 windows||105,09 €||12,00 €||117,09 €||137,00 €|
|16-25 windows||120,48 €||12,00 €||132,48 €||155,00 €|
|26-35 windows||146,12 €||12,00 €||158,12 €||185,00 €|