The gusset and punch window beam kits also have half sized gusset window beams. That's the pile of beams just to the lower left of the glue bottle. A small pile of assembled half sized gusset beams is to the left of the pile. The kits also have solid beam assemblies, one set per sprue. Those are the pile of beams just to the left of the gusset beams. A few assembled solid beams are to the left of the pile. The parts that are still on sprues to the far left are lattice beams, unassembled.
The kits that I bought are listed on the CVMW web page. Gusset window beams and punch window beams. They are $14.25 each and contain 5 sprues each kit. Each sprue will build three window beams, one solid beam and two half sized gusset beams. Each beam measures 4 7/7" long and 1/4" wide on each side.