Salty, good morning to you Sir.
In your first text you stated 20 bees ON the box. To clear up some confusion;
How many frames of bees in the hive? Are the frames full of bees?
What is the hive configuration? One deep, one deep and shallow etc.
When I ask how many frames of bees, no need to pull frames, removed the lid and count how many frames are filled with bees looking at you. BTW when I count 8 frames full of bees on a ten frame I use 80% as numerical value, and say the hive is 80% full.
Fall is here, enjoy everybody.
Blessings
Van