An AI generated model of an ordinary house brick, the image used to generate the model came from the web page of a popular UK DIY store which also nearly rhymes with bricks.

The brick this is based on measures 65mm in height, 215mm in length and 100mm in width, it should print fine at whatever size you want though.

I will update once ive printed it but so far i have it sliced with no rafts or supports with 0.2mm layer height and im going to print it using DEEPLEE red PLA.