Image 16 x 8 Universal Vents Ventilate and illuminate with glass block vents. Our universal vents are designed to incorporate into an exterior glass block wall or glass block window. Designed to use with 3” and 4” glass block. Find A Distributor Home Accessories 16 X 8 Universal Vents Vents Vents 16 x 8 Universal Vents Installation Technical Docs SGB-032 myMINIGLASS Silicone Installation System_En.pdf SGB-039 Silicone Installation - Pegasus (EN / ES) SGB-002 Mortar Install System_ES SGB-032 ProVantage Silicone Installation System.pdf SGB-002 Mortar Install System_EN View All »