ABS Square‑Base Offset Flange‑Square‑to‑Round Duct Adapter for Vent | Huaqi

ABS square-base offset flange, one-piece injection-molded of premium black ABS plastic. Offset square-to-round design with pre-drilled mounting holes on square base. The angled round spout fits limited-space installation for offset connection between square equipment face and round duct. Multiple sizes from FL100-FD to FL300-FD available. Works as inlet/outlet adapter for fresh air unit, range hood and exhaust fan. Solid structure with low air resistance, ideal for residential ventilation and commercial HVAC exhaust projects.