Borderlands 3 Increase Inventory Space
SDUs make a return in Borderlands 3 and allow you to increase your inventory size, personal as well as the vault.
After the initial 3-4 hours of the game, you will be introduced to SDUs or Storage Deck Upgrades and can then purchase them from Marcus Munitions in Sanctuary to increase your storage limit.
Each ammo type has its SDU in Borderlands 3. For example Pistol ammo, Heavy ammo, Shotgun ammo, SMG ammo, and Sniper ammo.
You can also upgrade your bag to carry more items and your bank storage. Lost loot can be collected more readily by upgrading it with SDUs as well.
Upgrading SDUs can be a bit expensive especially in the early hours of Borderlands 3 so be careful what you upgrade.
Only increase the capacity of ammo for weapons you commonly use. If you aren’t a big fan of snipers, it is not worth wasting resources on upgrading Sniper SDU. This is basically all you need to know about how to increase your inventory space in Borderlands 3.