Shop › 4" Round Downpipe Bracket 4" Round Downpipe Bracket $6.35 4" Unpainted Galvanized Round Downpipe Bracket with Bolt. Securely supports 4” round downpipes for reliable drainage. 4" Unpainted Galvanized Round Downpipe Bracket with Bolt. Securely supports 4” round downpipes for reliable drainage. Purchase Added! You Might Also Like Copper Flat Strap $4.00 Diamond Downpipe Band Copper $9.95 Diamond Downpipe Band $0.98 Diamond Downpipe Band Galvalume $3.50 Plain Galvalume Downpipe Band $1.28