Slimline Elegance. Striking Realism.

Experience the epitome of modern elegance and intelligent space-saving design with the Ultiflame Ultra SL Adoniselectric fire.

Featuring a sleek, glass-fronted design and a beautifully curved cast iron fascia in black, the Ultra SL Adonis delivers contemporary sophistication in a compact, slimline format - ideal for apartments, smaller living rooms, and stylish modern interiors.

Powered by advanced Multi Flame Projection Technology® and Living Ember Bed Technology®, this fire creates a mesmerisingly realistic flame display with exceptional depth, colour, and movement.

Immersive Flame Experience

• Multi Flame Projection Technology® for layered depth and motion
• Living Ember Bed Technology® recreates the glow of real embers
• Natural Oak logs & wood chips for authentic realism
• Fully customisable fuel bed
• Adjustable flame speed – from gentle flicker to lively flame
• 16 pre-set colour modes plus Animation mode
• LED brightness control

The result is a captivating flame effect that transforms your room into a warm and inviting retreat.

Smart Control & Connectivity

Control your fire effortlessly:

• Thermostatic remote control
• Manual control panel operation
• CELSI Smart App (iOS & Android)
• Amazon Alexa & Google Assistant compatible

Adjust flame colour, speed, brightness, and heat settings from your handset, smartphone, tablet, or voice assistant.

Design & Installation

• Glass-fronted inset electric fire
• Slimline inset rebate: 70mm
• Fitted with a 40mm fixed spacer for easy manual control panel access
• Curved cast iron fascia in black finish

An optional Flat-to-Wall Spacer Frame is available for installations where inset depth is limited.

Key Features

• Glass-fronted electric fire
• Slimline space-saving design
• Multi Flame Projection Technology®
• Living Ember Bed Technology®
• Natural Oak logs & wood chips
• Customisable fuel bed
• Flame speed control
• 16 pre-set colours + Animation mode
• LED brightness control
• Thermostatic remote & manual operation
• CELSI App controllable (iOS & Android)
• Amazon Alexa & Google Assistant compatible

Refined Flame. Minimal Space.

The Ultra SL Adonis combines cutting-edge flame technology with elegant cast iron styling — delivering a slim, sophisticated fireplace solution without compromising on realism or performance.