Umbra Conceal is a floating shelf that becomes invisible behind a stack of books. Made of powder-coated steel, can take 15lb (6.8kg) load and maximum 16” stack height. Recommended screwing into a stud. Small white shelf, bnip x1 (package is yellowed) — $15 each Haven’t had a chance to take pics yet, but can do so on request! Pickup is 5min from Yonge/401 Many items available due to moving.