1.MoSi2 heating elements 2.type:U,W,UL,WL,Rod 3Dia(mm):3/6,4 ... element basically made of high pure Molybdenum Disilicide.2.The main type :U.W.UL,WL,ROD Material grade :M1700, M1800 ... ,M1900.3.The standard dimension (mm):3/6,4/9, ... under high temperature it is plasticity.So,the better way for installation if the UShape element is to hang it vertically, ...