Magento

Required attribute conditions to be shown on layered navigation filters:

- Attribute properties / Catalog Input Type for Store Owner = Dropdown
- Frontend properties / Use In Layered Navigation = Filtered *
- System properties / Data Type for Saving in Database = Integer
- System properties / Globally Editable = Yes

Please note that a category should have the ‘Is Anchor’ property set to Yes in order for the layered navigation block to show.