Napoleon GD401 Periscope (Snorkel) for Wall Penetration Below Grade

Below-Grade Venting Solution for Napoleon Direct Vent Fireplaces

The Napoleon GD401 Periscope (Snorkel) for Wall Penetration Below Grade is designed to allow safe and code-compliant vent termination when a direct vent fireplace must be installed below exterior grade level. This vertical periscope-style vent raises the exhaust and intake termination point above grade, helping prevent water infiltration, debris blockage, and improper venting conditions.

Constructed for durability and weather resistance, the GD401 snorkel ensures proper airflow and combustion performance while maintaining the clean exterior appearance of your installation.

Genuine OEM Napoleon Venting Component

This product is a Genuine OEM Napoleon venting accessory, manufactured to exact factory specifications for compatibility, safety, and long-term performance. OEM construction ensures proper vent clearances, reliable draft, and compliance with Napoleon installation requirements.

Using genuine Napoleon venting components helps maintain manufacturer approvals, safety certifications, and warranty coverage, critical for both residential and commercial fireplace installations.