High Capacity 4 X 5 Downspout for Commercial Use

Our high capacity 4 X 5 downspout for commercial use removes water from gutters at faster speeds allowing the gutter to be more efficient.  The downspout diverts rainwater away from the building and keeps water from pooling at the foundation. Ask us about local delivery of up to 45 linear feet. Matching A & B elbows, custom offsets, straps, and brackets are available.


  • 30 different 24 gauge Kynar 500®  colors
  • Most common colors in stock
  • .032 Kynar Aluminum
  • 26 gauge Galvalume


  • Steel & Aluminum Substrates with Kynar®500 color finishes
  • G-90 Galvanized & Galvalume Mill Finish
  • Paint Grip
  • Aluminum: Mill Finish or Anodized
  • 12, 16, 20 oz Architectural Grade Copper
  • RHEINZINK Architectural Zinc
  • 300-Series Stainless Steel
  • Freedom Gray
  • Other metal materials are available upon request: the possibilities are endless!

Sheet Metal Supply was founded in 1991 with one very simple goal — to supply the roofing industry with consistent sheet metal profiles fabricated from quality materials with unmatched lead times.