Flak armor set [PvE Cross]

Flak set - helmet, boots, leggings, chest, and gauntlets.
 
Flak is the best armor for boss fights - it can absorb a good amount of damage and is cheap to repair in comparison to riot gear.
 
All sets are 496 (maximum) armor except "mixed lower tier" where you will get random durability set with armor ranging between 350-496.