... you leave, the cover close automatically in 3 seconds.- When dustbin is full, just press "open"button at the top of ... be put inside 20L; 12L can be put inside 40L;stainless steel dustbin, dustbinFC-B4300 3L,5L,7L,12L,20L,30L,40L Features ... : a) Bin: 0.4mm thick 18-0 stainless steel b) Pail: 430 stainless steel or galvanized steel with powder coating5) Durable and rust-resistant6) Suitable ...