We support DTC within Canada as a national distributor of their brand products and will support you for warranty of product even if it was not originally sold by Marathon. However we can't supply everything that DTC makes so if your cabinets were imported from an international manufacturer or from a US based manufacturer, they may be using parts that we don't have. We can try and supply alternatives, but some rework may be needed to adapt them for installation into your product. Any warranty is warranty of product only and does not include this installation or rework.
If you are in the USA or any other country besides Canada, you can email DTC directly at service@dtcdtc.com for support. We are not in a position to supply replacement products in the USA or elsewhere around the world.