(1) 4" ext. 90 degree coupler, flex. (1) hose clamp 78mm-101mm. OUR CHOICE. They may have been in storage anywhere from 1-30 years. Rubber parts, gaskets, hardware may need to be replaced and may not be useable.
Quick Seal Connector Kit 4" to 3" Adapter w/ 3 Piece Clamp & Weld Flanges 21-144
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1/4 NPT to 6AN Adapter Straight Pipe Thread to 6 AN Flare Fitting Black