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Napoleon Ascent Linear 42 fireplace shown installed in small living room space near kitchenManufacturer’s Suggested Price:  $3,099*
Napoleon Ascent Linear BL42 Gas Fireplace

Napoleon Ascent Linear BL42 Gas Fireplace BL42NTE

Designed for builders and homeowners alike, the Napoleon Ascent™ Linear 42 is a feature packed modern direct vent gas fireplace. With a clean face design and
contemporary media options the BL42 is a great choice for discerning individuals. The same frame size as the traditional Ascent™ 42 simplifies switching from one style to the other. Add MIRRO-FLAME™ Porcelain Reflective Panels to magnify and enhance flame appearance. Utilize the optional heat management system for mounting a TV above the fireplace. Make a statement at the right price with the Ascent™ Linear 42.


  • Clean face design
  • Topaz CRYSTALINE™ ember bed included
  • Mix and match additional media:
    • glass embers or glass beads in multiple colors
    • mineral rocks, shore fire kit (sand, rocks, vermiculite, and glass embers)
    • beach fire kit (driftwood logs)
  • High quality safety barrier
  • Battery back-up control
  • Optional decorative surrounds
  • 14,000-20,000 BTUs natural gas or liquid propane
  • Universal heat management system available
  • Optional remote control and eFIRE Bluetooth app available
  • Optimized burner performance
  • SIT Proflame II system (remote not included)
  • Optional blower kits available
  • Electronic Ignition Including Hi/Lo Flame adjustment
  • View the Ascent BL46 here

Photos of the Ascent Linear BL42 Gas Fireplace

Here are a couple samples of the many possible combinations:

Photo 1: Ascent BL42 with shore fire kit, beach fire driftwood logs, standard safety barrier, and porcelain reflective panels

Photo 2: Ascent BL42 with mineral rocks, topaz glass embers, and premium classic black surround

See an Ascent Linear 42 Fireplace you like?  Call us at 866-845-7845!

Available Accessories for the BL42NTE

Standard black safety barrier (included)

Premium classic black surround

MIRRO-FLAME porcelain reflective panels

eFire Bluetooth remote app (optional)

F60 & F45 remote controls, on/off with digital screen (optional)

Digital wall mount thermostat (optional)

Variable speed blower (optional)

Universal Heat Management: Simple and quiet heat management circulating heat around the room using ducts. Allows safe installation of electronics or artwork above the fireplace with reduced clearance. Front or side heat discharge. (Side heat discharge illustrated) (optional)

Hot Air Distribution Kit: Move warm air from the fireplace into other areas of the room, a different room, or outdoors via flexible ducting with an independent fan control. (optional)

Media Options

Topaz glass embers (included)

Shore fire kit (rocks, sand, vermiculite, glass embers – optional)

Beach fire driftwood logs (optional) and topaz glass embers (included)

Shore fire kit (rocks, sand, vermiculite, glass embers) and beach fire driftwood combined (optional)

Mineral rock kit (optional) and topaz glass embers (included)

Glass Embers Media: Blue, Amber, Black, Topaz, Clear

Glass embers media: Blue, Amber, Black, Topaz, Clear

Glass Beads: Blue, Amber, Black, Topaz, Clear

Glass beads: Blue, Amber, Black, Topaz, Clear

Required Options for the Ascent BL42 Linear Gas Fireplace

2) Required Venting – Questions about venting? We can help! 866-845-7845

For over two decades, Wolf Steel has had the perfect answer to simple and complex venting situations. Wolf Steel’s Freedom Flex Venting is a cost effective solution that is versatile and light weight, simplifying your installation. Compared with traditional venting, Flex Venting can save you up to 75% in time, labor, and parts costs. Manufactured with two layers of rolled aluminum, Flex Venting pipes pass each and every certification test, exceeding industry standards.

Possible venting configurations diagram.

Cutaway diagram of Wolf Steel flex venting.

Vertical venting termination components diagram.

Flex vent

Square wall terminal

Round wall terminal

Silhouette terminal

Roof terminal kit (kits may vary)

High temperature sealant

BL42NTE Product Manual/Specifications

Specification chart and dimension diagrams for the Napoleon BL42

Appliance location diagram for the Napoleon BL42

Diagram of rough framing requirements for the Napoleon BL42Diagram of rough framing requirements for the Napoleon BL42 directly on floor

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