Cembrit Cladding Horizontal Trim 40x50x40mm allows for an easily obtained finish around windows and doors. It is advised that there must be a minimum of 10mm clearance from the planks and framing structure to horizontal profiles, allowing proper water drainage. If used with a sheathing board the joint between the trim and the sheathing board must be sealed with exterior grade sealant. We recommend using a high-quality, exterior-grade sealant. Available in colours agate grey and anthracite grey.