10 Frame Beginner Beekeeping Starter Kit mason jar mug Deep Cut Comb Foundation —

Deep Cut Comb Foundation — the same thin

the second (400) describes the thread style

It fits standard 10-frame Langstroth hives and stacks on the 10-frame boxes you're already running

It replaces the solid panel of an inner cover with mesh

10 Frame Beginner Beekeeping Starter Kit mason jar mug Deep Cut Comb Foundation —This 10 frame beekeeping starter kit has everything a new beekeeper needs to start a hive assembled, ready to paint, and shipped from a working beekeeping operation in South Carolina. One purchase covers your woodenware, frames, tools, protective gear, and the most recommended beekeeping book. The only thing you add is bees. Features 10 frame screened bottom board (assembled) 10 frame deep brood chamber with 10 deep frames + Acorn triple waxed plastic