Need help?
Your cart is empty
Use this bar to show information about your cookie policy.
The Thetford 40536 portable waste tank cap is designed for use with 18, 27, or 35 gallon tanks
Free shipping
International shipping available!
Satisfied or Refunded
Click here for our 30 day return policy.
Top-notch support
Call 1-866-204-7049 to speak with a representative.
Secure payments
Pay with your preferred credit card or checkout with Paypal.
