Rock-Vent Square Ceiling Support
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The Square Ceiling Support is used on flat, cathedral, or sloped ceilings. The bottom of the ceiling support must extend a minimum of 3 inches into the room. A Universal Adapter is included to connect Rock-Vent Class A to either single or double wall stove pipe. Supports up to 60' of chimney pipe from a floor or ceiling joist. Constructed of 24 gauge galvalume steel painted black. Square Ceiling Support includes a 2 piece trim collar suitable for any ceiling pitch. Faceplate is 18 gauge stainless steel painted black and is a unique design that doesn't rely on spot weld construction, but utilizes a secure formed edge for long term peace of mind.
Measurement Charts:
11” Square Ceiling Support

5” | 6” | 7” | 8” | |
A | 5.2” | 6.2” | 7.2” | 8.2” |
B | 11” | 12” | 13” | 14” |
C Trim | 15”x15” | 16”x16” | 17”x17” | 18”x18” |
YY | 11” | 11” | 11” | 11” |
*Due to many variables beyond our control, the installer should check actual parts for final dimensions.
24” Square Ceiling Support
5” | 6” | 7” | 8” | |
A | 5.2” | 6.2” | 7.2” | 8.2” |
B | 11” | 12” | 13” | 14” |
C Trim | 15”x15” | 16”x16” | 17”x17” | 18”x18” |
YY | 24” | 24” | 24” | 24” |
*Due to many variables beyond our control, the installer should check actual parts for final dimensions.
Product Details:
The Square Ceiling Support is used on flat, cathedral, or sloped ceilings. The bottom of the ceiling support must extend a minimum of 3 inches into the room. A Universal Adapter is included to connect Rock-Vent Class A to either single or double wall stove pipe. Supports up to 60' of chimney pipe from a floor or ceiling joist. Constructed of 24 gauge galvalume steel painted black. Square Ceiling Support includes a 2 piece trim collar suitable for any ceiling pitch. Faceplate is 18 gauge stainless steel painted black and is a unique design that doesn't rely on spot weld construction, but utilizes a secure formed edge for long term peace of mind.
Measurement Charts:
11” Square Ceiling Support

5” | 6” | 7” | 8” | |
A | 5.2” | 6.2” | 7.2” | 8.2” |
B | 11” | 12” | 13” | 14” |
C Trim | 15”x15” | 16”x16” | 17”x17” | 18”x18” |
YY | 11” | 11” | 11” | 11” |
*Due to many variables beyond our control, the installer should check actual parts for final dimensions.
24” Square Ceiling Support
5” | 6” | 7” | 8” | |
A | 5.2” | 6.2” | 7.2” | 8.2” |
B | 11” | 12” | 13” | 14” |
C Trim | 15”x15” | 16”x16” | 17”x17” | 18”x18” |
YY | 24” | 24” | 24” | 24” |
*Due to many variables beyond our control, the installer should check actual parts for final dimensions.
Help & Documents:
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Our 316Ti flexible chimney liner and chimney liner components have passed the rigorous testing at the Underwriters Laboratories with best in class status and are UL Listed. So if you are looking for UL listed chimney liner sold directly to homeowners, then look no further than Rockford Chimney