HAVIS's PT-A-504 optional bulkhead hose guard kit is intended for use with PT-A-503 vent adapter kit. For the following insert models (does not include floor hose guard) PT-F03-100-1, PT-F03-100-2, PT-F03-100-3 PT-F04-100-1, PT-F04-100-2, PT-F04-100-3 PT-F05-120-1, PT-F05-120-2, PT-F05-120-3 PT-F06-120-1, PT-F06-120-. Includes the PT-A-504 bulkhead cover and hardware only.