Posted on 15 August 202515 August 2025 by J.M.W. GriffioenFREE STL DOWNLOAD wall flange for 110 x 55 mm OD rectangular air duct pipe 55x110_pipe_short_wall_flange_to_fit_a_pipe_20250727V2 55x110_pipe_long_wall_flange_to_fit_a_pipe_20250727V2