Tubeaxial Companion Flange Overall Dia 19-7/8 In. Inside Dia 18-1/2 In. For Tubeaxial Fan Dia 18 In. Dimension B 18-1/2 In. Flange Width 1-1/2 In. Material 16 ga. Steel Mounting Hole 5/16 In. Includes Predrilled Mounting Holes
Tubeaxial Companion Flange Overall Dia 19-7/8 In. Inside Dia 18-1/2 In. For Tubeaxial Fan Dia 18 In. Dimension B 18-1/2 In. Flange Width 1-1/2 In. Material 16 ga. Steel Mounting Hole 5/16 In. Includes Predrilled Mounting Holes