Posted to warehouses (6)
I believe the answer is:
depots
'to warehouses' is the definition.
(I've seen this in another clue)
'posted' is the wordplay.
'posted' anagrams to 'DEPOTS'.
But, I'm not clear how this is indicated.
Can you help me to learn more?
(Other definitions for depots that I've seen before include "Stations where passengers or goods are unloaded" , "HQs" , "Storage places" .)