Builders Best 110113a Wide Mouth Vent Hood 4 Inches

Product Description

The BUILDERS BEST 110113a is a plastic wide mouth vent hood designed for exterior dryer exhaust and ventilation terminations. It ships fully assembled with an 11-inch tailpipe, a back-draft flapper, and a riveted tailpipe construction that resists separation during installation. The hood is finished in white and sized for 4-inch duct connections, making it a direct fit for standard residential dryer and bath exhaust applications. Licensed HVAC technicians and plumbers install this type of fitting at the exterior wall penetration to prevent back-drafting and weather infiltration while maintaining proper exhaust flow.

This vent hood is suited for residential installations where a 4-inch round duct exits through an exterior wall or soffit. The wide mouth profile helps reduce restriction at the termination point, supporting adequate exhaust velocity for dryer venting and general mechanical ventilation. The included back-draft flapper closes when the system is idle to block cold air, pests, and moisture from entering the duct. It is commonly installed during new construction or as a direct replacement of damaged or deteriorated exterior vent caps.

Key Features

• Fully assembled unit ready for installation out of the box
• 11-inch tailpipe for secure wall-depth insertion
• Riveted tailpipe construction for a rigid, durable connection
• Back-draft flapper prevents reverse airflow when system is off
• White finish blends with standard exterior wall surfaces
• Sized for 4-inch round duct connections

Compatibility

Designed as an OEM-style replacement or new-installation termination fitting for 4-inch round residential exhaust duct systems, including dryer venting and bath fan exhaust.

Installation Notes

Installation is typically performed by an HVAC technician or general contractor during rough-in or retrofit work. Power down the appliance and confirm the duct run is clear before fitting the hood into the wall opening. Exterior penetrations should be sealed around the back plate with an appropriate weatherproof caulk to prevent moisture intrusion. Follow local mechanical codes and manufacturer guidelines for minimum clearances at exterior vent terminations.

Technical Specifications

• Duct Connection Size: 4 inches
• Tailpipe Length: 11 inches
• Material: Plastic
• Color: White
• Assembly: Fully assembled
• Unit of Measure: Each

Standard Information

• Brand: BUILDERS BEST
• Manufacturer Part Number: 110113a