Thanks to all who was trying to help. I really appreciate it.
Probably I didn't explain my problem properly.
There is no problem finding right size capsule for the coin. There is a coin dealer shop in the next city which has probably all possible sized of Lighthouse brand coin capsules
I have 1989 Proof Maple leaf coin set which is cased in beautiful presentation maple wood box. The capsules form the 30 mm coins have scratches which make that set, let's say, less beautiful.
Coin perfectly fits in Lighthouse 30 mm capsule, BUT the capsule doesn't fit in the box as EXTERNAL diameter of Lighthouse capsule is bigger that original mint capsule.
The problem is with extra edges around the Lighthouse capsule. Those edges makes capsule bigger…
Anybody knows any other brands of direct fit that comes in size of 30 mm and don't have those extra edges?