SEA ANCHOR MODEL DOUBLE DOOR SLIDING MECHANISM COMPLEMENTARY PARTS OF THE MECHANISM 1 Piece of Wall Rail in Desired Size Between 160 cm - 300 cm 4 Pieces Anchor Model Hanger 5 Pieces of Wall Rail Distance Wedges 4 Pieces Door Side Stopper Stopper 4 Pieces Door Upper Lock 2 Pieces Door Bottom Guide 8 Pieces m8*45 Bolt 5 Pieces M8*90 Wall Mounting Screws All Steel Parts Are Coated Black Against Rust. NOTE 1 : IT IS NOT POSSIBLE TO COMPLETE THE ORDER WITHOUT SELECTING THE RAIL LENGTH. FOR THOSE WHO DON'T KNOW HOW TO SELECT THE RAIL LENGTH; 4 TIMES THE WIDTH OF THE DOOR IS TAKEN AS A BASIS. FOR EXAMPLE, IF THE SINGLE WING WIDTH IS 60 CM, 240 CM RAIL; IF THE SINGLE WING WIDTH IS 75 CM, 30 0 CM RAIL WILL BE ENOUGH. IF THE DOOR WIDTH IS 80 CM AND ABOVE ; YOU NEED TO ORDER TWO PIECES OF THE SINGLE DOOR MODEL OF THE MODEL YOU LIKE. NOTE 2: When purchasing slow-down stoppers, you should consider the following: For example, for a double door mechanism, when 2 pieces are selected, you can install the slow-down system in the areas where your door closes (in the middle of the rail) or in the areas where it opens (at both ends of the rail); when 4 pieces are selected, you can use it in both directions of your door - both in the opening and closing areas.