Encore, Defiant and Large Winter Warm Insert*
*The Encore and Defiant Flexburn 2-in-1 requires a unique 1 inch thick catalyst. Learn more about this catalyst here.

- 13" long x 2.5" wide x 2" thick
(33 x 6 x 5 cm) - wrapped in stainless steel
- Item: CC-257 (ceramic)
- $234
Add to Cart


- 13" long x 2.5" wide x 2" thick
(33 x 6 x 5 cm) - Item: CS-257 (steel) $308
Add to Cart - longer burn time & more heat
Intrepid* and Small Winter Warm Insert
*This catalyst will not fit the Intrepid Flexburn, it requires a 1 inch catalyst.

- 6.6" long x 2.5" wide x 2" thick
(17 x 6 x 5 cm) - wrapped in stainless steel
- Item: CC-251 (ceramic)
- $122
Add to Cart

6.6" long x 2.5" wide x 2" thick
(17 x 6 x 5 cm)- Item: CS-251 (steel)
- $216
Add to Cart - longer burn time & more heat

Seneca and Federal/Airtight

- 6" diameter x 2" thick
(15 x 5 cm) - wrapped in stainless steel
- Item: CC-001 (ceramic)
- $152
Add to Cart

- 6" diameter x 2" thick
(15 x 5 cm) - Item: CS-001 (steel)
- $241
Add to Cart - longer burn time & more heat

catalytic thermometer
for Federal/Airtight (after 1990), Seneca
3-194
2 1/8 inch probe
$26
Buy thermometer
learn more
Sequoia Catalytic Fireplace

- 9.7" long x 6.6" wide x 2" thick
(25 x 17 x 5 cm) - wrapped in stainless steel
- Item: CC-610 (ceramic)
- $299
Add to Cart

Learn about the Watchman Electronic Catalyst Monitor. Made in the USA by Condar.