... 18mm 1. Product Name: slat wall board, groove board, MDF slot board, slotted MDF board, slat board2. Material: Medium Density ... Fiberboard(MDF)3. Size: Horizontal slot wall: 1220*2440mm Vertical slot wall: 2440*1220mm4. Thickness: 15mm, 18mm, or customized5 ... or customized10. End side half groove:1220mm high by 2440 wide slot wall panel has 12 grooves at the top and bottom ...