This Highland replacement Quartz Glass Tube for 4-Sided Tall Pyramid style/Flame style patio heaters. Measures 49.5" x 4" and fits the majority of all 4-sided Pyramid style heaters sold during the past few years. Fits 4-Sided Glass Tube Pyramid style heaters. This single-piece glass tube will also replace the two-piece glass tubes used in the Pyramid heater. PLEASE NOTE: This Glass Tube replacement will NOT fit 3-Sided heaters. It will only fit 4-Sided Heater Models.