Sea-Dog Stainless Steel Louvered Vent, 12 Inch

The Sea-Dog Stainless Steel Louvered Vent (331290-3) is a passive ventilation fitting built to let fresh air into below-deck spaces and engine compartments while keeping water out. Constructed of corrosion-resistant stainless steel, it is designed for long-term marine exposure where saltwater, humidity, and UV would quickly degrade painted or plastic hardware. The louvered face directs airflow through angled slats that promote air exchange without allowing rain or spray to pass through directly, making it a practical choice for engine bays, lazarettes, and cabin spaces that need passive airflow.

This vent measures 12 inches and is finished in silver stainless steel to match other stainless deck and hull hardware. It is intended for use with a collector box to route intake or exhaust air, and Sea-Dog also offers this same vent design (337290) in injection molded ABS as a lower-cost, non-metallic alternative for builders who do not require stainless construction. Choose the stainless version, part number 331290-3, when corrosion resistance and a metal finish are priorities for the installation.

Specifications

• Brand: Sea-Dog
• Manufacturer Part Number: 331290-3
• Material: Stainless Steel
• Color: Silver
• Product Dimensions: 5.5 inches D x 12.5 inches W x 12.5 inches H
• Weight: 0.812 pounds
• UPC: 035514331517
• Category: Ventilation

Frequently Asked Questions

What is the Sea-Dog 331290-3 louvered vent used for? It is a passive ventilation fitting that lets fresh air into below-deck spaces and engine compartments while its angled louvers help keep rain and spray out, and the Sea-Dog stainless louvered vent 331290-3 is typically paired with a collector box to route the airflow.

What material is the 331290-3 vent made from? The 331290-3 vent is made of stainless steel, chosen for corrosion resistance in marine environments where saltwater and humidity would degrade painted or plastic parts.

How big is this louvered vent? The Sea-Dog louvered vent measures 12 inches, with overall product dimensions of 5.5 inches deep by 12.5 inches wide by 12.5 inches high.

How much does the 331290-3 vent weigh? This Sea-Dog stainless louvered vent weighs 0.812 pounds.

What color and finish does the vent come in? Part number 331290-3 has a silver stainless steel finish.

Is there a plastic version of this vent? Yes, Sea-Dog offers the same louvered vent design in injection molded ABS as part number 337290, while 331290-3 is the stainless steel version for buyers who want a metal finish and added corrosion resistance.

Does the louvered vent need any additional parts to install? The 331290-3 louvered vent is designed to be used with a collector box to properly route intake or exhaust air through the vent opening.

Is the Sea-Dog 331290-3 vent corrosion resistant? Yes, being constructed of stainless steel, the 331290-3 vent resists corrosion in saltwater and humid marine conditions better than painted metal or standard plastic hardware.

What is the UPC for this Sea-Dog vent? The UPC for the Sea-Dog stainless louvered vent, part number 331290-3, is 035514331517.

Where is this vent typically installed on a boat? Louvered vents like the 331290-3 are commonly installed on engine compartments, lazarettes, and other below-deck spaces that need passive fresh air intake or exhaust.