Southwark Metal ph3l4127 Left End Register Boot 4x12

Product Description

The SOUTHWARK METAL ph3l4127 is a Type B left end register boot designed for residential and light commercial duct systems. Fabricated from 30-gauge ASTM A653 CS Type B steel with a hot-dipped galvanized finish, this boot provides a corrosion-resistant transition from round duct to a floor or wall register opening. It measures 4 x 12 inches at the register face and accepts a 7-inch round collar. HVAC installers use this fitting to terminate supply duct runs where a left-side entry orientation is required by the layout of the duct system.

This register boot is suited for forced-air heating and cooling systems in residential and light commercial construction. The left end configuration positions the round collar on the left side of the boot, making it the correct choice when duct routing enters the boot from that direction. It is part of the Southwark Metal P17L series. The gray galvanized finish is compatible with standard floor, baseboard, and toe-kick register grilles sized for a 4 x 12 inch opening.

Key Features

• Left end collar orientation for duct runs that approach from the left
• 4 x 12 inch register face opening fits standard grilles of that size
• 7 inch round collar inlet for connection to 7-inch round supply duct
• 30-gauge ASTM A653 CS Type B steel construction for structural integrity
• Hot-dipped galvanized finish resists corrosion in crawlspace and subfloor environments
• Part of the P17L series for consistent fitment across Southwark Metal fittings

Compatibility

Designed as an OEM-style replacement and new-construction fitting for forced-air supply duct systems using 7-inch round duct and 4 x 12 inch register grilles. Verify left-end orientation matches the duct entry direction before installation.

Installation Notes

Register boots are installed by licensed HVAC technicians or qualified sheet metal contractors. Power down the air handler and close the system disconnect before connecting or modifying any duct section. Secure the boot to the subfloor or framing with appropriate fasteners and seal all joints with UL 181-listed duct sealant or foil tape to maintain system efficiency. Confirm register face orientation and boot entry direction before fastening to avoid having to recut the opening.