Filters out radiation when attached to a gasmask.
The item id for Filter in unturned is 1271. You can use this ID with the commands below to spawn the item, give it to a player or buy it on a modded economy server.
Useable: Filter
Size_X: 1
Size_Y: 1
Size_Z: 0.225
Blueprints: 1
Blueprint_0_Type: Tool
Blueprint_0_Supply_0_ID: 1271
Blueprint_0_Product: 67
Blueprint_0_Build: 27