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Category: Gas Inserts > Manufacturer: Regency > BTU: 20000 - 24999


This compact Energy Gas Insert is perfect for heating smaller living areas.  Regency quality is evident in every detail - from high efficiency heat to custom styling. The E21 features the dancing flames of an exceptional Regency fire.

Backed by the industry’s most comprehensive Limited Lifetime Warranty.

Maximum BTU23,50022,500
Turn Down BTU11,75011,250
EnerGuide Rating50.60%53.48%
View Area318 sq. in. 
Room SizeSmall 
Vent TypeB-Vent 
Min. Fireplace Opening* 
Width (front)26.5"
Width (back)18"
*Regency Contour Faceplate or Full Screen Door How it Looks:
  • Efficient upgrade to keep the heat in your home
  • The look of a wood fireplace with the convenience of gas
  • Heat radiating ceramic glass provides maximum viewing area
  • Realistic logs with beautiful flames and platinum infused bright embers
How it Works:
  • Whisper quiet variable speed blower to push the heat
  • Controllable heat with up to 50% flame turn down
  • Easy access waist height controls
  • B-vent application is ideal for older homes
  • Operates on natural gas or propane

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