Fill-Rite's vent caps prevent pressure buildup in your fuel storage tanks. They are coated with a durable powder-coat finish and designed to fit a padlock for security. The FRTCB is a powder-coated tank vent cap. The cast iron base is manufactured to fit all 4" NPT tank openings and includes padlock security feature.

• Brand Name: Fill-Rite
• Material: Steel
• Product Type: Vented Tank Cap With Base
• Number in Package: 1 pk
• Width: 6 in.