APPROVALS: Complies with Manufactures' Standardization Society (MSS) SP-58 & SP-69 (Type 1). Complies with Federal Specifications A A-1192A (Type 1). Complies with Underwriters' Laboratories (UL) & (cUL) (062311- EX15800), 1/2"-12" UL & cUL approved, 2-1/2"-6"  (FM) approved ID:3048552.

FINISH: Zinc Plated, Hot Dip Galvanized,Green Powder coated,PVC Coated,Also available in Stainless Steel 304 & 316 Alloys.

NOTES: Other materials，finish & lengths are available upon request.