simple door shoe rack household multi-layer gap shoes storage dormitory space-saving shoe cabinet small narrow 简易门口鞋架子家用多层夹缝鞋子收纳宿舍省空间鞋柜小型窄款

chessboard grid-two layers chessboard grid-three layers chessboard grid-four layers chessboard grid-five layers chessboard grid-six layers chessboard grid-seven layers chessboard grid-eight layers chessboard grid-nine layers

as shown in the figure