Hello, Im sorry to hear you need new hinges.
The best place to get replacement hinges for that freezer is this web site: http://www.espares.co.uk/browse/at1084ma968/fridges-and-freezers/dedietrich
I would really call to order these door hinges because they dont list all their parts on site. Also you will be sure they send you the correct parts if you call and order that way;-)
Plus, if you do, they will likley ship them to you today ;-)
Please call Espares: 0844 9777 888
In any case, I will stick with you until this is complete.
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