Our 38mm x 21mm Bolection Small Dado Rail is usually used where you have Beading Boxes on walls below it to act as a Wall Panelling Cap.  Whilst it is often used for this, it can also be used at the base or top of a column, or to add additional impressive decorative trim / framing detail to doors, ceilings and furniture.  It is 38mm High (Vertical measurement) with a 21mm Projection (Horizontal measurement).  The Standard rebate at the bottom of the image is 5mm High (Vertical measurement) and 9mm Projection (Horizontal measurement). 

We also offer a  42mm x 18mm Dado Rail which has a profile Height of 42mm (Vertical measurement) and an 18mm Projection (Horizontal measurement), and a 65mm x 25mm Dado Rail which has a profile Height of 65mm (Vertical measurement) and a 25mm Projection (Horizontal measurement).