Unfinished large panel opening in outside wall

Question

This house was built in 2015. I am the 2nd owner. I am unsure what this opening is/was meant for. (see photos)

Somebody might have meant to install a panel and then had a change of heart. There are 4 anchors that suggests someone meant to attach some sort of a metallic cover, but it is not there. This looks like unfinished work. As far as I can tell, everything is functioning properly in my house.

Can anybody help make sense of this, and suggest remediation?

Shall I simply apply some stucco on the existing concrete boards?

(I am unsure what is best in term of water and pest proofing, but surely there is room for improvement!)

Answer 1

Pondría un poco de lámina de vinilo allí para que actúe como barrera contra la humedad y luego volvería a instalar una de esas tablas de cemento en la abertura. Luego, obtenga un poco de malla de estuco y péguela a la placa de cemento y luego aplique el estuco. Puede tomar una capa o dos para que tenga el grosor correcto. Una vez que se haya completado la capa superior, pase un rodillo de pintura de pelo poco profundo sobre el área para tratar de igualar la textura. Puede que tengas que practicar eso un poco. Estoy de acuerdo con @jsotola ... seguro que parece una puerta para gatos o perros.