This bathroom sink cabinet is designed to sit under your open sink with a U-shaped design to create more storage space for your bathroom. U shape Opening Slot Size: 8.75 in.L x 7.5 in. W, Make sure to measure the sink before purchasing.This bathroom storage cabinet is made from MDF and will hold up to 33 lbs. total and 11 lbs. per shelf, so it can fit any toiletries you need to store. Color: Gray.