This blank is used to cover the hole left by the standard cut out tool (Part No. TC1279-50KIT) for 100, 220 and 300mm ducts. It is used where a break out is no longer needed or a cut out has been made in the wrong place. The blank simply slides into the cut out, and completely fills it, to provide a full & continuous duct.
|Duct Size||100x100mm, 220x100mm, 300x100mm|