The Lee Standard Hood fits any Lee holder configuration with a 2mm slot on the front. The hood slides in to the filter holder like a filter, or an adapter ring can be attached to the hood directly. The self-supporting, compendium-style bellows expand to the required position without using guides or rails.
Lee also makes Single and Double Filter Holders with built-in hoods (B&H Catalog #'s, LELHFS and LELHFS2).