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Metal-Fab Type B Round Chimney Pipe Support Plate - For Chimney Pipes with a 12 Inch Inner Diameter

Metal-Fab Type B Round Chimney Pipe Support Plate - For Chimney Pipes with a 12 Inch Inner Diameter

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$66.65
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Product Details

Manufacturer: Metal-Fab
Metal-Fab Part Numbers: 12MSP
Item Number: MFB-12MSP
UPC: 622417100489

Metal-Fab Type B Round Chimney Pipe Support Plate - For Chimney Pipes with a 12 Inch Inner Diameter is the largest of 8 sizes: Size 12 Inches; Inside Diameter 12 inches; Support Type Top Plate.

This Metal-Fab Type B Round Chimney Pipe Support Plate is a true multitasker. You can use it to close the opening created when running a vent pipe through a combustible floor and provide extra support for taller chimneys. For use with twelve-inch Metal-Fab Type B Chimney systems.

Compare This Product Line's Sizes and Options

Metal-Fab Type B Round Chimney Pipe Support Plate
Model Size Inside Diameter Support Type Category Price
Metal-Fab Type B Round Chimney Pipe Support Plate - For Chimney Pipes with a 3 Inch Inner Diameter 3 Inches 3 inches Ceiling Support; Through-Ceiling $47.80
Metal-Fab Type B Round Chimney Pipe Support Plate - For Chimney Pipes with a 4 Inch Inner Diameter 4 Inches 4 inches Ceiling Support; Through-Ceiling $40.51
Metal-Fab Type B Round Chimney Pipe Support Plate - For Chimney Pipes with a 5 Inch Inner Diameter 5 Inches 5 inches Ceiling Support $40.37
Metal-Fab Type B Round Chimney Pipe Support Plate - For Chimney Pipes with a 6 Inch Inner Diameter 6 Inches 6 inches Ceiling Support $60.51
Metal-Fab Type B Round Chimney Pipe Support Plate - For Chimney Pipes with a 7 Inch Inner Diameter 7 Inches 7 inches Ceiling Support $60.85
Metal-Fab Type B Round Chimney Pipe Support Plate - For Chimney Pipes with an 8 Inch Inner Diameter 8 Inches 8 inches Ceiling Support $61.29
Metal-Fab Type B Round Chimney Pipe Support Plate - For Chimney Pipes with a 10 Inch Inner Diameter 10 Inches 10 inches Top Plate Support $73.94
Metal-Fab Type B Round Chimney Pipe Support Plate - For Chimney Pipes with a 12 Inch Inner Diameter 12 Inches 12 inches Top Plate Support $66.65

Customer Q&A with Product Specialists

Craig from murrieta ca asked:
I have a 12-inch pipe, is this a true 12-inch diameter?
I have a 12-inch pipe, is this a true 12-inch diameter?
The 12-inch designation on this Metal-Fab Type B Round Chimney Pipe Support Plate refers to the inner diameter of the compatible pipe. Metal-Fab Type B B-Vent pipes are sized by their inner diameter, meaning a 12-inch Metal-Fab Type B pipe does have a true 12-inch inside diameter. This support plate (model 12MSP) is designed to fit a 12-inch Metal-Fab Type B B-Vent system. It is important to note that the plate installs around the outside of the pipe, so its center opening is larger than 12 inches to accommodate the pipe's outer diameter. The 12-inch measurement indicates the pipe's inside diameter, not the plate's opening size. If you require the exact opening dimension of the plate, we can confirm this measurement with Metal-Fab. You can also find more information in the Metal-Fab B-Vent brochure. If your 12-inch pipe is a different brand than Metal-Fab, please specify the make, as B-Vent systems are brand-specific, and we can then confirm the correct support plate.
Answered by: Brennan W. on Jul 17, 2026

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