Belanger B20-459MB is a replacement part, specifically a Presto drain cap. It is a device used to cover and seal a drain, preventing water from flowing out. The cap is made of durable materials and is easy to install and remove.

Here are some of the key features and possible use cases of the Belanger B20-459MB Presto drain cap:

• Prevents water from flowing out: The cap fits securely over the drain, creating a watertight seal that prevents water from leaking out. This can be useful for a variety of purposes, such as preventing water from overflowing a sink or bathtub, or for sealing a drain that is not in use.