Carry twelve OM4 multimode fibers through indoor or outdoor cable pathways with the HFCB19 series tight-buffer construction. This cable combines a plenum rating with armored construction, addressing pathways where air-handling-space requirements and added physical protection both affect cable selection. Its 12-strand count supports fiber distribution without moving to a higher-count cable. Tight-buffer fiber construction is suited to premises cabling routes that transition between building spaces and outdoor segments. The armored design adds a protective layer around the cable construction, while the plenum designation identifies it for applicable plenum pathway use. OM4 multimode fiber provides the optical medium throughout all 12 strands, keeping the fiber type consistent across the cable. HUBBELL HFCB19012P4 is the 12-strand OM4 multimode, plenum-rated armored configuration within the HFCB19 cable series. Specify it where the route calls for indoor/outdoor coverage, tight-buffer construction, and armor in the same cable. Connector type, cable length, termination method, and jacket color are not assumed, allowing the cable selection to remain focused on the stated fiber count, fiber class, environment rating, and construction.