Profile: Air Vent Awning Mfg. Co., Inc. supplies door & window awnings, enclosures and railings. We offer 5" I-beams, box beams and trellises. We offer panels of standard 3" thickness, which is used for the roof and walls. We use polycarbonate, bubble skylight for insulated awning. We also produce gutters in three different sizes like 5", 3" & 2" and with various colors.