Continental Fan’s AXC100B is a 4-inch centrifugal in-line duct fan from the AXC series, designed for residential, commercial, and light industrial ventilation. It uses a backward‑curved motorized impeller driven by an external‑rotor motor to move air efficiently through long or complex duct runs. The heavy‑gauge steel housing has a baked epoxy finish, and the unit is speed‑controllable, cULus listed, and suitable for supply or exhaust applications. Mounting brackets and an external junction box with a pre‑wired capacitor support straightforward installation in any orientation. The AXC100B delivers a maximum free‑air performance of 150 cfm (about 255 m³/h). The fan’s duct connection diameter is 3.9 inches (approximately 9.9 cm), aligning with nominal 4‑inch ducting. Rated for 120 V operation and ambient air up to 140 °F (60 °C).

