Door dampers do not fit for display cabinet wall cupboard...

I have had to realize that the integral door dampers for the Avsikt display cabinet door for wall cabinets (Faktum kitchen) are completely useless, since the door is "hollow" on the inside, and thus the door damper does not encounter any resistance. Strangely enough, when you plan the row in the kitchen planner and then generate the article list, a door damper for the Avsikt cabinet is included in the plan. I had bought three cabinets: 2x 50cm Abstrakt with one door, 1x 60cm Avsikt, also with one door. According to this, 2 door dampers are needed, which is one package, since there are two in one package. But the kitchen planner includes 2 packages. It's only 5 EUR... but still. Luckily I had one left over, so I only had to buy one package anyway.

Is there any way to use the door damper after all, or another door damper? Especially with the glass door, it would be better if it closed slowly.

Where can I get these Blum hinges and/or dampers? Unfortunately, there is no dealer search on their website...

e.g. in shipping at Beschläge-online.de or ligno-shop.de. on site at the hardware dealer.