Modeled after Dr. C.C. Miller's design, this slatted rack has been improved to be used effectively with anIPM Screened Bottom Board.
The slats run parallel to the frames, so varroa mites fall straight down through the screen. Slatted racks also help the colony with ventilation chores.
Benefits of this design include less comb-gnawing, more brood nest and straight comb-pulling. The rack is placed over the bottom board and can be left on throughout the year.