Glass Tube Replacement for 3-Sided Tall Pyramid Flame Style Patio Heaters - Commercial Quartz Glass Tube Replacement - 51.5" Tall Glass Tube Replacement for Pyramid 3-Side Outdoor Patio Heater 51.5" tall 3 1/2" in diameter Fits the 3-sided commercial tall glass tube patio heater Commercial Quartz Glass Tube Replacement