Our friends at DIRAK recently mentioned that their PA hinges for nested doors offer many advantages: If you need a hinge with high load capacity, they recommend variant 4-400. Does it need to lift-off? No problem they explain with variant 4-402. It can also be fastened very easily with M5 screws or rivets. Hinge 4-401 offers an economical and lightweight variant. See the advantages for yourself in this video!