B0102-03601BK Aluminum Half Doors

Can the doors be easily removed? And does something stop them from being opened too far?

The door is designed for convenient use and maintenance. In general, the door should be relatively easy to remove, but specific steps may require some basic tools. If you need detailed instructions for disassembly, we recommend referring to the user manual provided with the product.
It is equipped with a built-in limiter or damping mechanism to ensure safe operation and prevent the door from being opened too far.

How large would the door be opened forward?

The door panel could be opened up to 150°.

How to install the half doors?

Here is the installation video for your reference.