All items ship FREE to any of the lower 48 US states

Adaptors and Accessories

Specialty chimney parts enable you to make easy connections between the Rock Flex chimney liners and other stainless steel chimney liner components. Our specialty parts provide a perfect fit for stainless steel flue liners during the chimney liner installation process.

316L Stainless Steel Chimney Liner Increase Reducer

Free Flow Design

Stainless Steel increase / reducer for chimney lining connections. Now you can adapt pipes of different all sizes with this little handy guy. You can use this adapter to connect stainless steel flex chimney liners to different appliances including inserts, fireplaces, wood stoves, etc...

Free Flow design is simply the best increase / reducer on the market. It comes with 2 female ends so you can crimp whatever end you need to on the job. Butt welded seams and expanded to perfection, and Rockford chimney liner supply offers you this quality product.

Made from stainless steel. Rockford Chimney Supply stocks a complete inventory of chimney liner supply products.

T Extension Slip Connector

This connector's male end slips inside the snout of our T. It allows you to add 8 to 16 inches simply by sliding it in or pulling it out of the T snout. A perfect fit, with no cutting required! The expanded end of the slip connector is female with an ID of 6 1/16" opening that accepts a standard 6" pipe. Perfect for when you need to add length to the horizontal snout of the tee.

Chimney Flue Extender

Need to offset 2 chimney liner caps adjacent from each other or extend your flue above the roof line? This little wonder provides an 18 inch offset / extension. Fits perfectly on to the top plate collar and accepts the Quick Connect Rain Caps at the top of the flue extender. A perfect fit every time for your stainless steel flue liner!

Rectangle to Round Insert Adapter Boot

Make connections between round flex liners to inserts and stoves with rectangle or oval exhaust openings. The collar is angled back toward the damper. Low profile clears most fireplace openings. Made of 11 gauge carbon steel. It is recommended that you use a chimney liner appliance connector to connect the liner to the insert boot, view our chimney liner connectors page.

Boot Dimensions: 17" wide x 10" deep x 3 1/4" tall at peak. Wedge shaped

Rectangle to Round Connector

Mates a dripless connection between rectangle end and a round opening or vertical pipe.

Square to Round Connector

Mates a dripless connection between square end and a round opening or vertical pipe.

Oval to Round
Connector

Mates a dripless connection between rectangle end and a round opening or vertical pipe.

Custom Removable Double Snouted T with T cap

A T with two take offs, it is designed to allow you to connect two appliances to one chimney liner. Select any two snout diameters from 3 inch through 8 inch. The standard snout length is 10 inches. The T connector will extend 3 inches above the top snout and 3 inches below the bottom snout. Please enter your measurements in the form below.

Rockford Clean Out Doors Aluminum Clean Out Doors

Easy to install aluminum chimney cleanout doors. These cleanout doors are perfect for indoor installation and durable enough to withstand the elements when used outdoors. They manufactured right here in the USA. At last a rust free cast aluminum clean out door. This cleanout door is backed by a manufacturer's limited lifetime warranty. Comes in 2 sizes listed below.

Insulated Clean Out Door

These insulated clean-out doors from Lyemance are available in three sizes. These clean-out doors are not recommended for smoke chambers.

Chimney Thimble

Protect combustibles with a UL listed wall pass through thimble. Easy to install. Use in masonry or metal chimneys. Thru-the-Wall Insulating sleeves protect walls and adjacent combustibles on both sides. Prevents overheating of wood, drywall, wallpaper, etc.. UL tested up to 2100°. Reduces the minimum 18" NFPA clearance spec. to 2". Use with single or double wall pipe. Install Instructions The thimble is 8" long.
You can add 8" by cementing two thimbles together with our Stove Gasket Cement. Or you can cut the thimble down with a hacksaw for thinner walls.

Chimney Thimble Only

Choose this option if you need just the insulated chimney thimble and do not need the metal sleeve and flange.

Safe-T Thimble

This thimble is UL listed and allows you to pass your single wall stovepipe through a combustible wall. It provides protection from the heat when the connector is passing through a combustible wall. The Saf-T Thimble features a solid-pack insulated snout that telescopes inward toward the wall allowing for easy adjustment were wall thickness is 4"- 8 1/2." Both models need a 16" wide by 17" high opening for installations. Easy to install.

Off-Set Box

This two piece adapter / off-set box is designed to allow you to adjust the insert front and back from inside the firebox. The Offset amount is 0" to 6". The adaptors top outlet receives 6" or 8" (I. D.) liner. The bottom collar fits inside the outlet on the wood insert.

The 6" offset box measures 2 ½” tall x 8” wide x 14” long and and has an offset adjustment range from 0 to 6”.

The 8” offset box measures 3” tall x 10” wide x 18” long, with an offset adjustment range from 0 to 8”.