Place the front of the box dog into the wellside

Place the body of the dog box in behind the front like so

Fasten the front of the dog box and divider together using M6x16 stainless steel button heads with antiseize

Bolt the top of the dog box to the front using M6x16 stainless steel button heads with antiseize

Take the x4 clamps provided and fasten the dog box to the wellside like so

Your clamp should be looking like so

Drill M8 hole through the bottom of the fascia and the divider through the wellside

Bolt the bottom of the dog box to the wellside using M8x25 bolts

Drill M8 hole through the bottom of the fascia and the divider through the wellside

Bolt the bottom of the dog box to the wellside using M8x25 bolts

Fasten M8 zinc flanged nylocs underneath the wellside