Suitable for holding up to 25 thermometers in the correct vertical position, thus avoiding mercury separation, which may occur when thermometers are stored improperly. Manufactured from 1/4"" high density polyethylene, the rack is sturdy and will not tip. Sides have large comfortable carry handles for easy transport of thermometers. Hole diameters in top and middle plates 5/16"". The bottom plate has convenient drain holes of 1/8"". Overall dimensions are 8""W x 10""H x 5.75""D.