1. Introduction
Thank you for choosing the FIREGAS FGS-USB21G70AC 30-inch Range Hood Insert. This manual provides essential information for the safe and efficient installation, operation, and maintenance of your new appliance. Please read this manual thoroughly before use and retain it for future reference.

Image: The FIREGAS 30-inch Range Hood Insert seamlessly installed in a modern kitchen setting.
2. Safety Information
WARNING: To reduce the risk of fire, electric shock, or injury, observe the following:
- Install this range hood in accordance with all specified instructions.
- Ensure proper ventilation is provided for combustion gases from fuel-burning equipment to prevent back-drafting.
- Always disconnect power to the range hood before servicing or cleaning.
- Do not operate any fan with a damaged cord or plug. Discard fan or return to an authorized service facility for examination and/or repair.
- Do not use this unit with any solid-state speed control device.
- This unit must be grounded.
- Clean grease filters frequently. Grease should not be allowed to accumulate on the fan or filters.
3. Package Contents
Verify that all components listed below are included in your package:
- 30 inch Insert Range Hood
- Charcoal Filters (#CC170) (2 included)
- Manual & Cutting Draft & Dampers
- Oil Cup & Screws

Image: All components included in the FIREGAS range hood package, including the hood, charcoal filters, oil cup, screws, and manual.
4. Specifications
| Feature | Specification |
|---|---|
| Model Info | FGS-USB21G70AC |
| Air Flow Capacity | 600 Cubic Feet Per Minute (CFM) |
| Material | 430 Grade Stainless Steel |
| Noise Level | Less than 57 Decibels (at high speed) |
| Mounting Type | Insert Mount (Built-In) |
| Controls Type | Push Button |
| Number of Speeds | 3 |
| Light Source Type | LED (1 x 6W LED strip) |
| Filter Type | Baffle (Stainless Steel, Dishwasher-Safe) |
| Ventilation Type | Convertible (Ducted/Ductless) |
| Product Dimensions (D x W x H) | 11.5" x 27.8" x 11.3" |
| Electrical | 120V/60Hz, 3-prong plug |
| Vent Outlet | 5.9 inch round top vent |

Image: Key features and specifications of the FIREGAS range hood, highlighting its 600 CFM suction, 430-grade stainless steel construction, dishwasher-safe baffle filters, and ducted/ductless convertible design.
5. Installation
The FIREGAS FGS-USB21G70AC range hood is designed for built-in or insert mount installation and can be configured for both ducted and ductless operation. Refer to the included manual and cutting draft for detailed installation instructions.
5.1. Recommended Height
For optimal performance and safety, the recommended height from the stove to the bottom of the range hood is between 26 to 30 inches.
5.2. Ventilation Options
- Ducted: Air is exhausted outside through a duct system.
- Ductless (Recirculating): Air is filtered through charcoal filters and recirculated back into the kitchen. Charcoal filters (#CC170) are included for ductless operation.

Image: Diagram illustrating the product dimensions and recommended installation height (26-30 inches) above a stove.
5.3. Installation Video Guide
For a visual guide on installation and understanding ventilation options, please refer to the official product video below:
Video: Official FIREGAS video demonstrating the installation process, dimensions, and the powerful suction capabilities of the 30-inch insert range hood, including ducted and recirculating venting options.
6. Operation
The range hood features user-friendly push-button controls for fan speed and lighting.
6.1. Control Panel
The control panel is located on the front of the unit and includes buttons for power, fan speed selection (1, 2, 3), and light control.

Image: Close-up view of the push-button control panel and the stainless steel baffle filters.
6.2. Fan Speeds
Select from three fan speeds to effectively remove smoke, odors, and fumes from your cooking area. The 600 CFM motor provides strong and efficient suction.

Image: The FIREGAS range hood effectively removing steam and cooking fumes with its 600 CFM powerful suction.
6.3. LED Lighting
Activate the integrated 6W LED light strip to illuminate your cooktop. This energy-efficient lighting provides ample brightness for your cooking needs.

Image: The 1 x 6W LED lighting strip providing bright illumination over the cooktop.
7. Maintenance
Regular maintenance ensures optimal performance and longevity of your range hood.
7.1. Cleaning Baffle Filters
The stainless steel baffle filters are designed to capture grease and are dishwasher-safe. For cleaning, simply remove the filters and place them in your dishwasher. Clean filters frequently to prevent grease buildup.

Image: Close-up view of the stainless steel baffle filters, which are removable for cleaning.
7.2. Charcoal Filter Replacement (Ductless Mode)
If operating in ductless (recirculating) mode, the charcoal filters (#CC170) will need periodic replacement. Refer to the full instruction manual for replacement frequency and procedure. These filters are not washable and must be replaced.
7.3. Exterior Cleaning
Clean the exterior of the range hood with a soft cloth and a mild, non-abrasive cleaner. Avoid using harsh chemicals or abrasive pads that could damage the stainless steel finish.
8. Troubleshooting
Before contacting customer support, please review the following common issues and solutions:
- Fan not operating: Check if the power cord is securely plugged in and if the circuit breaker is tripped. Ensure the fan speed button is pressed.
- Lights not working: Verify the light button is pressed. Check if the LED strip requires replacement (contact support if so).
- Poor suction: Ensure baffle filters are clean and free of grease buildup. For ductless models, check if charcoal filters need replacement. Verify that the ductwork (if ducted) is not obstructed.
- Excessive noise: Check for loose parts or obstructions in the fan. Ensure the unit is securely mounted.
9. Warranty and Support
This FIREGAS range hood comes with a 1-YEAR LIMITED WARRANTY. For technical assistance, warranty claims, or any other inquiries, please contact our tech support team. Refer to the contact information provided in your product packaging or on the official FIREGAS website.