Selkirk 5" x 8" Cathedral Support Box (Direct-Temp Gas) Blue Amount required: 8 lbs for

Amount required: 8 lbs for 25” / 14 lbs for 30”

The Onyx® has two heat settings at 1500W and 750W

One draws air in from outdoors to support combustion

Stock Code 18017 Size 30" Weight 19 lbs

Product Type Vent-Free Gas Fireplace Framing Width 41-1/2" Framing Height 40-1/2" Framing Depth 20-3/4" BTU/hr 33

Selkirk 5" x 8" Cathedral Support Box (Direct-Temp Gas) Blue Amount required: 8 lbs forSelkirk 5" x 8" Cathedral Support Box Used to support Direct Temp pipe when installing in a cathedral or pitched ceiling. CCS comes with Support Collar and Decorative two piece Trim Plate. Direct Temp Gas The latest Direct Vent Gas Fireplace Venting technology listed for use with a wide variety of appliances. Direct Temp features a 304 Stainless Steel inner liner providing exceptional corrosion resistance for long term system integrity. Selkirk Direct