Mitek db350 Recessed Dryer Vent Box 22 Gauge

Product Description

The MITEK db350 is a recessed dryer vent box designed for in-wall installation in residential laundry areas. Fabricated from 22-gauge aluminized steel, it creates a clean, flush mounting point for dryer exhaust connections while recessing the dryer closer to the wall. The box measures 21 inches tall, 12.5 inches wide, and 4.375 inches deep overall, with a depth from nailing flange to rear of 3.5 inches. The top port is an oval measuring 4.875 inches by 3.125 inches. Weighing 4.03 pounds, this unit is manufactured in the USA and carries UL Classification for a 1-hour F-Rating. Licensed contractors and finish carpenters typically handle installation during new construction or remodel.

The db350 is suited for residential new construction and renovation projects where dryers are installed against framed interior or exterior walls. The recessed design allows the dryer to sit closer to the wall, reducing duct length and improving airflow efficiency. The box fits within standard 3.5-inch stud bays. Installers working on multi-unit residential or light commercial laundry rooms will find the tapered sides useful, as they allow multiple boxes to nest for storage and transport.

Key Features

• UL Classified for a 1-hour F-Rating for fire-rated wall assemblies
• 22-gauge aluminized steel construction resists corrosion and accepts paint without priming
• Deep drawn manufacturing process for consistent wall thickness and structural integrity
• Extension rim protrudes 0.875 inches from nailing flange for positive wall engagement
• Eight 0.25-inch mounting holes, four per side, for secure fastening to framing
• Gas port knock-out included on all units for combination gas-dryer installations
• Tapered sides allow nesting of multiple boxes for efficient jobsite storage

Compatibility

Designed as an OEM-style recessed dryer vent box for installation in framed walls with standard 3.5-inch stud bays in residential and light commercial laundry applications.

Installation Notes

Installation is typically performed by a licensed contractor or experienced installer during rough-in framing or remodel work. The unit is secured to wall studs or framing through the eight mounting holes using appropriate fasteners. Confirm local building codes and the International Fuel Gas Code requirements when utilizing the gas port knock-out for combination appliance installations. Do not restrict the exhaust port opening or reduce the duct connection below the rated oval dimensions.

Technical Specifications

• Material: 22-gauge aluminized steel
• Overall Dimensions: 21 inches tall x 12.5 inches wide x 4.375 inches deep
• Inside Dimensions: 18.25 inches tall x 9.5 inches wide
• Depth (Nailing Flange to Rear): 3.5 inches
• Top Port Size: 4.875 inches x 3.125 inches oval
• Extension Rim Protrusion: 0.875 inches from nailing flange
• Mounting Holes: Eight 0.25-inch holes, four per side
• Weight: 4.03 pounds
• Fire Rating: UL Classified 1-hour F-Rating
• Country of Origin: USA

Standard Information

• Brand: MITEK
• Manufacturer Part Number: db350