Duro Dyne 31390 Wood Dual Hanger 3/8 X 2-1/4 Inch

Product Description

The DURO DYNE 31390 is a one-piece wood dual hanger designed to create threaded anchor points in wood substrates for suspending HVAC equipment, ductwork, and accessories. The head features both end-tapping and cross-tapping, allowing in-line mounting and side-mounting of threaded rod systems, eye rings, and similar hardware. Compatible with 3/8-inch threaded rod, it is zinc plated for corrosion resistance. This anchor is part of the Sammy product line and is intended for installation by HVAC technicians and mechanical contractors working on duct suspension systems.

This dual hanger is used in residential and commercial HVAC applications where ductwork, air handling equipment, or mechanical accessories must be suspended from wood structural members such as joists or beams. The dual-tapped head design eliminates the need for separate in-line and side-mount anchors, reducing hardware count on the job. It is suited for new construction and retrofit installations where a secure, threaded suspension point is required in wood.

Key Features

• One-piece construction with end-tapped and cross-tapped head for in-line and side-mounting flexibility
• Accepts 3/8-inch threaded rod, eye rings, and compatible suspension hardware
• Zinc plated finish for corrosion resistance in mechanical room environments
• Designed specifically for penetrating and anchoring into wood substrates
• Reduces hardware inventory by combining two mounting orientations in a single anchor

Compatibility

Designed for use with 3/8-inch threaded rod systems and compatible suspension hardware in wood-framed construction. Intended for HVAC ductwork and equipment suspension applications requiring a threaded anchor point in wood structural members.

Installation Notes

Installation is typically performed by licensed HVAC technicians or mechanical contractors. De-energize all electrical systems and ensure HVAC equipment is fully shut down before installing suspension anchors near live components. Drive the anchor into the wood substrate per standard mechanical fastening practice and verify thread engagement before loading with threaded rod or suspension hardware. Follow applicable SMACNA and local mechanical code requirements for hanger spacing and load ratings.