Lambro Industries 3008-r Periscope Dryer Duct 4 in Aluminum

Product Description

The LAMBRO INDUSTRIES 3008-r is an adjustable aluminum periscope dryer duct designed for tight clothes dryer installations where wall clearance and depth are limited. Built from two-piece aluminum construction, it extends from 24 inches to 41 inches in length to accommodate varying installation depths. The 90-degree connection at the dryer exhaust outlet transitions to a straight connection at the wall duct fitting, allowing the dryer unit to sit as close as 3 inches from the wall. Licensed HVAC techs and appliance installers rely on this style of duct in laundry closets, alcoves, and recessed installations where a standard flexible or rigid elbow cannot fit.

This periscope duct is suited for residential laundry closets, built-in cabinetry installations, and any tight-clearance application where the dryer must be pushed close to the wall. The adjustable length range — 24 inches to 41 inches — provides flexibility across different wall and appliance configurations. The straight-to-wall connection keeps the exhaust path as direct as possible, reducing airflow restriction compared to multiple-elbow routing. It accepts a 4-inch duct diameter, which is the standard size for most residential electric and gas clothes dryers.

Key Features

• Adjustable length extends from 24 inches to 41 inches for flexible installation depth
• 90-degree dryer-side connection transitions to a straight wall-side connection
• Allows dryer placement as close as 3 inches from the wall surface
• Two-piece aluminum construction for lightweight handling and corrosion resistance
• 4-inch diameter matches standard residential dryer exhaust outlet sizing

Compatibility

Designed as an OEM-style replacement and installation solution for residential clothes dryer exhaust systems using a 4-inch diameter duct connection, particularly in laundry closets and tight-clearance installations.

Installation Notes

Installation should be performed by a qualified appliance technician or HVAC professional familiar with dryer exhaust venting requirements. Disconnect the dryer from power or gas supply before connecting or adjusting the duct. Secure all joints per local mechanical code requirements to prevent exhaust leakage into the living space. Do not compress the duct below its minimum extended length, as this restricts airflow and can create a fire hazard over time.

Technical Specifications

• Duct Diameter: 4 inches
• Minimum Length: 24 inches
• Maximum Length: 41 inches
• Minimum Wall Clearance: 3 inches
• Material: Aluminum
• Construction: 2-piece adjustable

Standard Information

• Brand: LAMBRO INDUSTRIES
• Manufacturer Part Number: 3008-r