HomeSaver RectangleFlex 304/316-Alloy Stainless
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With RectangleFlex, you have a heavy, yet very flexible pipe of 5 /34" x 9 1/2" inside dimensions - 54 1/2 square inches in total area. Since an 8" round pipe only has a 50 1/4" total area, you can see that RectangleFlex gives no loss in stack volume when attached to an 8" stove. (For outside dimensions add 1/4") RectangleFlex is made from 4-ply interlocked certified stainless steel, each .018" thick. 304-alloy RectangleFlex comes with HomeSaver's lifetime warranty for wood burning applications. 316-alloy comes with a lifetime warranty for wood, coal, oil and non-condensing gas applications. See warranty information on HomeSaver - HOMESAVER WARRANTIES PDF FILES. RectangleFlex is UL Listed to the 1777 Standard for zero clearance when installed according to the manufacturer's instructions. Also listed to ULC S635-00. Ordering RectangleFlex is easy because there is just one size. The inside dimensions are 5 3/4" x 9 1/2". Outside dimensions are 6" x 9 3/4". RectangleFlex is sold in 5' lengths, 25' coils, and 10' through 50' custom lengths. Contact us for more information on shipping. See custom order RectangleFlex by the foot at bottom of this page. For fireplace relines, see our Dial-A-Flex sizes by clicking here. BE SURE TO READ PRODUCT AND ORDERING NOTES AT BOTTOM OF EACH PAGE.
Universal Flex Connecting Band (fits any size HomeSaver Flex)
R-R Adaptor: RectangleFlex to RectangleFlex
RectangleFlex is flexible, yet very thick and heavy like other HomeSaver flexible liners. As a result, in order to join two sections you need this special adaptor to create the necessary "male-end-down" connection. This R-R adaptor does that, and with new engineering, it fits even better.
R-S Adaptor: RectangleFlex to 8" RoundFlex
The R-S Adaptor allows you to come down the flue with RectangleFlex and then mate into 8" RoundFlex for the smoke chamber run. It will mate RectangleFlex to 8" rigid round stainless pipe as well or basically any round pipe on bottom.
R-O Adaptor: RectangleFlex to Large OvalFlex
This adaptor is what you'll need to mate the RetangleFlex (which has come down the flue) to the large OvalFlex (which you'll then run through the damper area).
S-R Adaptor: Rigid Stainless - RectangleFlex
Or... Use it to join 8" RoundFlex or Pro to RectangleFlex for you damper/smoke chamber run. In this case, you'll need to add an 8" connector-adaptor to mate the RoundFlex to this Adaptor. Or... Use it to join 8" Heat-Fab on top to RectangleFlex on bottom.
RectangleFlex Top Clamp and Storm Collar
Note: Top/Bottom Support Brackets can be used instead of the top clamp pictured here. Pictured above, click here to view.
RectangleFlex Tee w/Removable Take-Off & Cover
There are two pieces to the 8" round removable take-off: a "ring" that fits through the take-off hole from the inside, and the take-off, which fastens to the ring on each side by two radiator-hose type clamps. Tee Cover is sold separately.
Special Order Top/Bottom plates available. Click here for information.
RectangleFlex Cast Iron Insert Boot
Install by drilling and bolting, or taping and screwing, into your insert top. Then seal with Furnace Cement, Flue Goo, or Flat Fiberglass Stove Gasket. Click on item name to view more information. Secure the Flex into the boot with the removable rod or screws.
RectangleFlex Chimney Cleaning Brush
Product Note: FL indicates freight line shipment. Ordering Note: Cut-to-length pieces of HomeSaver liner are NON RETURNABLE, so please order carefully. Ordering Note: Inside dimensions of pipe are 5 3/4" x 9 1/2". For outside dimensions add 1/4" to the inside dimensions. Cross-sectional area is 54.6 sq.in. Product Note: Flex pipe compresses during shipping and may need to be stretched out - instructions for stretching are included with all pipe. Product Note: All special order HomeSaver Flex pipe must ship via freight line. Carriers require packaging on all liners. This cost will be calculated after we have shipping address. TEE HEIGHT AND TAKE-OFF LENGTH FOR RECTANGLEFLEX TEES 304 RectangleFlex, With Removable Take-Off
316 RectangleFlex, With Removable Take-Off
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Here's another
HomeSaver industry innovation - RectangleFlex.
Before
RectangleFlex, the whole family of 8" X 12" flues into which 8"
stoves were vented could not be relined without downsizing - because
you obviously can't get 8" round relining pipe down an 8" X 12"
flue. And downsizing goes against NFPA 211 code. Then
RectangleFlex came to the rescue. 
If you ever need to join two sections of
RectangleFlex. This is the adaptor that will do the
job.
Most of the time when you reline a flue with
RectangleFlex, it will be a straight shot all the way down through
the smoke chamber and straight into a RectangleFlex
tee.
In many cases you'll come down the flue with
RectangleFlex
and need to use large OvalFlex to get through the
damper.
Use this S-R Adaptor when you've relined a flue with 8"
rigid stainless and need to attach it to HomeSaver
RectangleFlex for your damper smoke chamber run.
When you install RectangleFlex this 18-ga. top clamp
will be used as part of your top-mounting hardware assembly.
The special storm collar, when used with a rain cop will give your
installation the protection it needs from rain. Both items are
installed in the same way as described on previous pages for
RoundFlex and OvalFlex.
Run RectangleFlex directly into this tee anytime it's
called for in your installation. Notice the slanted sides -
this tee has been redesigned and re-engineered to fit RectangleFlex
even better.
RectangleFlex 304-alloy top plates are available
with outer dimensions of 9" x 13", 13" x 18", or 18" x 18".
The hole has a nice raised lip and is sized just right to fit
RectangleFlex. Other features include rounded
corners.
These boots fit over the exhaust vents of most
inserts.
This photo shows a RectangleFlex rain cap and all the
top-mounting hardware pieces featured on this page assembled on a
section of RectangleFlex. It is shown here as you would
assemble in a typical installation. 
Use this 20-ga.
milled steel end-cone during RectangleFlex installations. Your
helper can pull RectangleFlex down past bends much more easily with
this end-cone in place. Or attach the end-cone to the winch cable
and pull the RectangleFlex up the flue using our Super Winch.
When using a winch, always use care that the flex is moving
smoothly. 
Here's a brush made to fit RectangleFlex
perfectly. It is a special version of the standard
Rutland Master Sweep Brushes with 3/8" pipe threads. 5 3/4" x
9 1/2" 
