There is draft of cold air coming into the house from my conservatory door.

I have noticed that there is a small plastic part that is broken and has left a hole at the bottom of the door. I don't know what this part is called.

Could someone tell me what it is called so that I can locate a replacement?

There is draft of cold air coming into the house from my conservatory door.

I have noticed that there is a small plastic part that is broken and has left a hole at the bottom of the door. I don't know what this part is called.

Could someone tell me what it is called so that I can locate a replacement?

Another long shot to show where this fits.

There is draft of cold air coming into the house from my conservatory door.

I have noticed that there is a small plastic part that is broken and has left a hole at the bottom of the door. I don't know what this part is called. Could someone tell me what it is called so that I can search for and buy it?

There is draft of cold air coming into the house from my conservatory door.

I have noticed that there is a small plastic part that is broken and has left a hole at the bottom of the door. I don't know what this part is called.

Could someone tell me what it is called so that I can locate a replacement?