These provides filler parts for hydraulic power unit tanks or other liquid reservoirs. Liquids are strained as they are added to the Tank and it lets the Tank Filler Breather. The 30 mesh filter screen removes dirt and debris from liquids as they enters the system. The breather cap filters the air , trapping air borne dirt down to 40 – or -10 – micron leves . It permit air passage at up to 25 cfm. Mounting hardware, gaskets and templates are supplied.