Wall-mounted · Recessed
Sale
Supplemental heat output; actual output depends on power and settings.
Topaz Glass + Charcoal Media
Yes — Napoleon Home Wi-Fi app control
INCLUDED WITH YOUR FIREPLACE
What's included
Astound 42" SlimMount Electric Fireplace
Package contents for this model
FIREPLACE & FINISHING
- Napoleon Astound 42-inch SlimMount electric fireplace with integrated heater
- Topaz decorative glass media
- Charcoal ember media
- Tinted anti-glare front viewing glass
- Side panels for recessed installation
- Finishing trim kit
CONTROLS & INSTALLATION
- Mounting brackets and installation hardware
- Multifunction remote control
- Factory plug-in power cord
View Full Technical Specifications
Fit and finish
Dimensions
Overall size
W × H × D- Width
- 44 1/8"
- Height
- 18"
- Depth
- 4"
Framing / rough opening
Required opening- Framing width
- 42 3/4"
- Framing height
- 17 1/2"
- Framing depth
- 4"
Viewing area
Visible flame area- Viewing width
- 42 1/8"
- Viewing height
- 12 3/8"
Performance
Heating and electrical
- Maximum heat output
- 5,000 BTU
- Maximum wattage
- 1,500 W
- Heating area
- Up to 400 sq. ft.
- Voltage
- 120V
- Amperage
- See manufacturer documentation for voltage-specific current draw.
- Hardwire
- Yes
- Plug-in
- Yes
Project planning
Installation and viewing
- Installation type
- Recessed/Wall-mount
- Viewing style
- Front View
- Best For
- Slim feature walls and recessed 2x4 installations
- Indoor / outdoor rating
- Indoor only
- Heater location
- Front Vent
- Installation
- RecessedWall-mounted
- Installation configurations
- Wall-mountedRecessed
Everyday experience
Controls and experience
- Flame Colours
- Orange, Yellow, Combined
- Smart / app control
- Yes — Napoleon Home Wi-Fi app control
- Remote
- Yes
- Media type
- Topaz Glass + Charcoal Media
Model information
Product details
- Series
- Astound
- Size
- 42"
- Size range
- A. Compact (Under 50")
- Shipping weight
- 75.8 lbs
Coverage
Warranty
5 Year Limited Warranty
About This Fireplace
The Napoleon Astound 42 SlimMount is an ultra-slim linear electric fireplace designed for wall-mounted or recessed installations in standard 2x4 construction. Its spark-effect flame system offers three flame colour settings with adjustable speed and brightness, while tinted anti-glare glass keeps the flame view clear.
It includes Topaz glass and charcoal media, a full-feature remote, Napoleon Home App control, Google Home and Alexa compatibility, plus ECO and BOOST heat modes. The 120 V, 1,500 W heater provides up to 5,000 BTU of supplemental heat.
Frequently Asked Questions
Product, delivery and warranty answers in one place.
How much supplemental heat does this fireplace provide?
Maximum manufacturer-listed output: 5,000 BTU.
Manufacturer-listed heating area: Up to 400 sq ft.
Actual heat output and room coverage depend on electrical configuration, room conditions and installation.
Can I install this fireplace below a TV?
Clearances vary by fireplace and TV. Check this model's official installation instructions and the television manufacturer's requirements before choosing the location.
What is included with this fireplace?
Verified package contents: Napoleon Astound 42-inch SlimMount electric fireplace with integrated heater, Topaz decorative glass media, Charcoal ember media, Tinted anti-glare front viewing glass, Side panels for recessed installation, Finishing trim kit, Mounting brackets and installation hardware, Multifunction remote control, Factory plug-in power cord. Optional media and accessories are sold separately unless specifically stated.
How do shipping and local delivery work?
For qualifying Canadian orders, standard shipping costs $199 below $999 and is free at $999 or more. Remote locations, oversized items and certain destinations may need a custom freight quote.
Qualifying orders of $999 or more may receive free local delivery within our Burlington-area delivery zone. Final shipping and delivery eligibility are confirmed at checkout or by our team.
When will my fireplace arrive?
Dispatch depends on supplier availability and the item selected; transit time begins after dispatch. Refer to the estimate near the purchase controls, or contact us for a model-specific update before ordering.
Can I pick up my fireplace in Burlington?
Pickup is available on eligible orders by arrangement. Our showroom is at Unit G, 4129 Harvester Road, Burlington, Ontario. Please contact us to confirm your order is ready before travelling.
What warranty applies to this model?
The product's listed manufacturer warranty is 5 Year Limited Warranty.
Review the manufacturer's warranty terms for coverage, exclusions and claim requirements, or ask our team for assistance.
What if my fireplace arrives damaged?
Inspect the package when it arrives. Photograph any visible damage, note it with the delivery carrier where possible, keep the packaging, and contact our team promptly with your order details so we can help review the next steps.
Downloads & Resources
Manufacturer documents for planning and installation.
Manufacturer Specification SheetMeasurements and technical informationView PDF ↗
Installation / Owner's ManualWiring, safety, clearances and operationView PDF ↗
Need help planning?
Speak with our fireplace specialists about compatibility and installation.
Get expert advice →Trusted by Our Customers Since 2000
See what our customers are saying about their experience with The Electric Fireplace Shop.