Rock-Vent Class A Chimney Pipe Elbow Kits are available in 15 and 30 degree options. Each elbow kit includes 2 elbows and 1 elbow support. Elbows are used to offset obstructions such as framing joists in your installation. The elbow support is required between two elbows to support the chimney weight created by the offset. The two straps of the support are 36 inches in length. It's not recommended to use more than 4 elbows on an installation.

We offer three steel options for Elbow Kits: 304L Stainless Steel Inner/Galvalume Outer, 304L Stainless Steel Inner/430 Stainless Steel Outer, or 316L Stainless Steel Inner/430 Stainless Steel Outer.

The length of the chimney pipe can be no greater than 72 inches and no more than 2 sections of chimney pipe can be installed between the offset elbows. A second elbow strap is required when two chimney sections are used in the offset (available as an optional accessory).

Offset Charts:

15 Degree Offset Chart for 5" to 8"

Chimney Length	5" Dia.: A Offset	5" Dia.: B Height	6" Dia.: A Offset	6" Dia.: B Height	7" Dia.: A Offset	7" Dia.: B Height	8" Dia.: A Offset	8" Dia.: B Height
None	5/8"	7 1/2"	5/8"	7 1/2"	5/8"	8"	3 1/8"	8 1/8"
6"	1 3/4"	13 3/8"	1 5/8"	12 1/2"	1 7/8"	13 5/8"	2"	14 1/4"
12"	2 3/4"	17 7/8"	2 7/8"	18 1/8"	3"	18 1/2"	3"	18 3/4"
18"	4 1/8"	23 7/8"	4 3/8"	24"	4 1/8"	24 3/8"	4"	24 5/8"
24"	N/A	N/A	5 3/8"	29 3/4"	5"	30 1/2"	5 1/4"	30 3/8"
36"	8 3/8"	41 5/8"	8 1/8"	41 1/4"	7 1/2"	42"	8"	42"
48"	N/A	N/A	10 3/4"	53 1/4"	10"	53 1/2"	10 1/8"	54 3/8"

30 Degree Offset Chart for 5" to 8"

Chimney Length	5" Dia.: A Offset	5" Dia.: B Height	6" Dia.: A Offset	6" Dia.: B Height	7" Dia.: A Offset	7" Dia.: B Height	8" Dia.: A Offset	8" Dia.: B Height
None	3 5/8"	13 3/4"	3"	13 1/4"	4 1/8"	15 1/4"	4 1/4"	16 1/8"
6"	6 1/8"	18 7/8"	5 1/4"	17 5/8"	7 1/8"	20 1/8"	7 1/8"	21 3/4"
12"	8 1/2"	22 3/4"	8 1/8"	22 7/8"	9 5/8"	24 1/4"	9 1/2"	25 3/8"
18"	11 5/8"	28"	11 1/8"	27 7/8"	12 1/2"	29 3/8"	12 1/2"	30 5/8"
24"	N/A	N/A	13 3/4"	33 1/4"	15 3/4"	34 7/8"	15 1/2"	35 7/8"
36"	20 7/8"	44"	20 1/4"	43 3/4"	21 5/8"	45 1/4"	21 7/8"	46"
48"	N/A	N/A	26"	54"	27 1/2"	55 3/8"	28 1/2"	56 5/8"

*Due to many variables beyond our control, the installer should check actual parts for final dimensions.

Measurement Charts:

Class A Elbow Kit 6” x 15” Degree

	A	B	C	D
6”	6”	8.5”	7.8”	9.2”

Class A Elbow Kit 6” x 30” Degree

A	6”	7”	8”
B	8.5”	9.5”	10.5”
C	9.2”	9.7”	10.5”
D	9.8”	10.8”	11.8”

Elbow Support

	5”	6”	7”	8”
A	8.5”-10.5”	8.5”-10.5”	8.5”-10.5”	8.5”-10.5”
B	2”	2”	2”	2”
YY	45.5”	45.5”	45.5”	45.5”

*Due to many variables beyond our control, the installer should check actual parts for final dimensions.

Rock-Vent Class A Chimney Systems

Rock-Vent Snow Wedge

Rock-Vent Vented Standard Class A Flashing

Rock-Vent Support Box Truss Spanner

Rock-Vent Chimney Pipe End Cap

Rock-Vent Metal Roof Class A Flashing

Rock-Vent Spark Arrestor Screen

Rock-Vent Class A Telescoping Sections

Rock-Vent Class A Elbow Kits - 15 or 30 Degree

Rock-Vent Class A Wide Open Style Chimney Cap

Rock-Vent Insulated Tee and Tee Cap

Rock-Vent Class A Wood Style Chimney Cap

Rock-Vent Class A Standard Chimney Cap