Sierra Flame BENNETT-45-NG Natural Gas Linear Fireplace, 30,000 BTU
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- Installation
- Built-in / recessed
- Width
- 36–47 in
- View
- Front-facing
- Fuel
- Natural gas
- Venting
- Direct vent
- Warranty
- 5 Year Limited (1 year on electrical & wear parts)
- 30-day returns
- 5-year limited warranty
- Secure checkout
Not sure it fits? Ask a fireplace specialist(307) 323-3338 · info@livefireco.com
Mon–Fri, 9am–5pm ET
BENNETT-45-NG Programmable Controls and Firebox
Sierra Flame BENNETT-45-NG is a natural gas direct vent linear fireplace with electronic ignition and a 30,000 BTU output. Its flush clean face design has a viewing area measuring 42 inches wide by 16.5 inches high. The 45-inch designation is nominal; the fireplace's actual overall width is 44.36 inches.
BENNETT-45-NG Heat and Flame Adjustment
A seven-stage modulating valve lets you adjust the flame. The deluxe digital remote includes a seven-day programmable thermostat. Fan speed is adjustable through the dual fan kit's six-stage control.
The listed natural gas efficiency is 69.5%.
- Natural gas model with 30,000 BTU output.
- Listed natural gas efficiency of 69.5%.
- Electronic ignition and seven-stage flame control.
- Deluxe digital remote with a seven-day programmable thermostat.
- Dual fan kit with six-stage adjustable control.
- Black reflective fire glass and a nine-piece decorative rock media set.
- Top-only venting with a 4-inch / 7-inch vent arrangement.
BENNETT-45-NG Firebox and Overall Size
The firebox has a linear dual stainless steel pan burner and black porcelain panels, with ceramic glass across the viewing area. Black reflective fire glass and a nine-piece decorative rock media set surround the flame.
The Sierra Flame BENNETT-45-NG measures 44.36 inches wide, 38.83 inches high and 16.5 inches deep. It weighs 170 pounds. These are overall product dimensions, not framing or clearance measurements. The fireplace vents through the top only.
Sierra Flame BENNETT-45-NG Natural Gas Linear Fireplace, 30,000 BTU specifications
| Brand | Sierra Flame |
| Model | BENNETT-45-NG |
| Product Type | Gas Fireplace |
| Height | 38.83 in |
| Width | 44.36 in |
| Depth | 16.5 in |
| Weight | 170 lb |
| Country of Manufacture | Canada |
| Manufacturer Warranty | 5 Year Limited (1 year on electrical & wear parts) |
Manuals & documents
BENNETT-45-NG Log Diagram (PDF)
BENNETT-45-NG Log Placement Guide (PDF)
Shipping & delivery
Free standard shipping on orders $300 and up to the 48 contiguous states and DC. Orders under $300 ship for a flat $29.99. We do not ship to Alaska, Hawaii, US territories or outside the US.
We confirm the ship date by email before your order leaves, and tracking is emailed when it ships. Larger fireplaces travel by freight carrier and may need a delivery appointment. If your model is not in stock, we contact you with the lead time before charging your card. Inspect the delivery before you sign and note any visible damage on the carrier receipt.
Returns & warranty
30-day returns on new, unopened and unused items in the original packaging. Change-of-mind returns carry a 25% restocking fee and return shipping. Items damaged in transit or defective on arrival are replaced, repaired or refunded at no cost to you: send photos within 48 hours of delivery.
Every fireplace is covered by its manufacturer warranty; the term for this model is listed under Specifications. Full return policy · Shipping policy
Sierra Flame BENNETT-45-NG Natural Gas Linear Fireplace, 30,000 BTU: questions
Which fuel does BENNETT-45-NG use?
BENNETT-45-NG uses natural gas.
What output and efficiency are listed?
The fireplace has a 30,000 BTU output and a listed natural gas efficiency of 69.5%.
What controls does the fireplace have?
It has electronic ignition and seven-stage flame control. The deluxe digital remote includes a seven-day programmable thermostat, and the dual fan kit has six-stage adjustable control.
How large is the fireplace and its viewing area?
The fireplace measures 44.36 inches wide, 38.83 inches high and 16.5 inches deep overall. Its viewing area is 42 inches wide by 16.5 inches high. The overall measurements are not framing dimensions.
What vent arrangement does it use?
BENNETT-45-NG vents through the top only, using a 4-inch / 7-inch vent arrangement.
What firebox materials and media are listed?
The fireplace has ceramic glass, black porcelain panels and a linear dual stainless steel pan burner. Decorative media includes black reflective fire glass and a nine-piece decorative rock media set.
Sierra Flame accessories
Media, trim and mounting options. Check each accessory's page for compatible models, or ask a specialist.





