Basic 125 StallFount Cover / Non-Heated Trough Assembly. This fountain does not have a cover replacement – you have to replace the trough frame and the hinged cover together. This trough does not have the bracketry installed that would be needed if you wanted to mount the heating elements and make it a heated model. If you order the heated version #18083, even if you don’t add heaters now, you could in the future…Your decision. By the way, this part is nearly the same price as a complete new unit…again, your decision.