The first linear brick of its kind in the market designed and manufactured by Petersen. It is a 100% handmade product using unique waterstruck techniques. The K41 has semi reflective portions due to areas being vitrified during firing. It has a combination of red flashing and sintering over a purple body with a percentage of bricks covered in blackened sand. It is a through colour product with surface creasing synonmymous with the handmade manufacturing process. It is a 4 sided facing brick which can be supplied in bespoke formats and specials.