Lambro 1775l Dryer In-line Damper, 4 X 4-in.

The Lambro 1775L in-line dryer vent damper is a draft blocker designed to seal your dryer exhaust line and prevent unwanted outdoor air from entering your home. This compact damper fits inside standard 4-inch dryer vent ductwork, creating a reliable barrier that stops reverse airflow and protects your home's comfort and energy efficiency.

By blocking cold air from entering through the dryer vent, this damper reduces heating and cooling losses, helps your HVAC system work more efficiently, and can lower your energy bills. It also keeps out debris and pests that might otherwise enter through the vent opening, reducing the risk of moisture buildup that can lead to mold growth and appliance damage.

Features and Benefits

• Precision 4 x 4-Inch Fit: Engineered to match standard dryer vent dimensions for a tight, leak-free seal that integrates seamlessly with existing ductwork.
• Backdraft Prevention: Blocks cold outside air from entering your home through the dryer vent, maintaining consistent indoor comfort and reducing HVAC strain.
• Debris and Pest Protection: Keeps unwanted materials and pests from entering your home and laundry system through the vent opening.
• Easy Installation: Simple slide-in design requires no tools or professional assistance, allowing quick DIY installation in minutes.

Specifications

• Brand: Lambro
• Model: 1775L
• Size: 4 inches x 4 inches
• Suitable for use with: Draft blocker applications