Two different sizes of rectangle make up this chevron effect. Why not add more interest with a Woolf border made from triangles

Tiles used Code Colour
Rectangle 151 x 75 x 9mm (6 x 3 x 3/8") 7123V Dover White
Rectangle 151 x 24 x 9mm (Rectangle 6 x 1 x 3/8") 6821V Grey