Aluminium Double Pinned Dori Block
51mm x 50mm to make the brick gauge.
Double pins making the dori left and right handed.
Compatible with 40 / 50 / 50.8mm steel or aluminium profiles.
Dori Blocks - also known as Brick Alignment Blocks or Line Blocks,
typically used in pairs to hold a masonry line in place,
preventing deviation and irregularities.