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DESCRIPTION

  • Collar is rolled formed and features 1 1/2" crimp and 3/8" convex bead for branch duct connection
  • Flange is 1" wide and made of 30 gauge Steel for added durability
  • Starting collars are assembled with 1/8" x 1/8" zinc-coated steel rivets

Royal Metal Products 30 ga Duct Board Collar

R261F

Diameter:

SPECIFICATIONS

ASTM Specifications
ASTM A-653
Diameter
4 in
Gauge
30
Height
6 in
Material
Galvanized Steel

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