HHT Outside Air Kit – Model AK24 Improve Fireplace Efficiency with Outside Combustion Air The HHT Outside Air Kit AK24 supplies fresh outside combu...

HHT Pioneer II Outside air elbow kit (used to offset outside air starting collar) Trusted hearth performance, built to last. Choose the HHT Pioneer...

HHT SLP-TRAP1 Rear Vent Horizontal Termination Kit for SLP Vent Pipe Complete Horizontal Vent Termination Kit for SLP Direct Vent Fireplaces Comple...

HHT SLP-TRAP2 Rear Vent Horizontal Termination Kit for SLP Vent Pipe Complete Horizontal Vent Termination Kit for SLP Direct Vent Fireplaces Comple...

HHT SLP-RVTK Rear Vent Termination Kit for Vermont Castings Appliances Complete Rear Vent Solution for Vermont Castings Direct-Vent Stoves Install ...

HHT Refractory Extensions for Majestic Ashland Fireplace Extend Firebox Durability with Precision-Fit Refractory Panels Enhance your Majestic Ashla...

HHT Refractory Mortar – 10 lbs | MMMORTR High-Strength Fireplace Mortar for Secure Panel Installation Key Features 10 lbs. bucket of refractory mo...

HHT SLP-RDS Roof Deck Underside Insulation Shield for SLP Vent Pipe Maintain Safe Clearances Where SLP Vent Pipe Passes Through the Roof Ensure saf...

HHT Telescoping Round Chimney Cap with Storm Collar for SL1100 Chimney Pipe (TR11T-B) Adjustable Chimney Termination Protection for SL1100 Wood-Bur...

HHT Round Telescoping Termination Cap with Storm Collar for SL300 Chimney Pipe (TR342-B) Adjustable Chimney Cap Protection for SL300 Wood-Burning C...

HHT Round Chimney Cap with Storm Collar for SL1100 Chimney Pipe (TR11) Chimney Termination Protection for SL1100 Wood-Burning Systems Finish your c...

HHT Round Termination Cap with Storm Collar for SL300 Chimney Pipe (TR344) Complete Your SL300 Chimney System with Reliable Weather Protection Pro...

HHT Round Termination Top Adapter Kit for Chimney Shrouds Seamless Connection for Shroud-Compatible Chimney Terminations Upgrade your chimney syst...

HHT SLP 10' (3048mm) SL Pipe Length - Flexible Venting (SLP-FLEX-10) Flexible OEM liner for tight or offset vent routing. Complete your installatio...

HHT SLP 2" - 6" (51 - 152mm) Slip Section to Slide Over Pipe (can Be Cut to Length) - Black (SLP6A-BK) Genuine OEM pipe section for compatible HHT ...

HHT SLP 2" - 6" (51 - 152mm) Slip Section to Slide Over Pipe (can Be Cut to Length) (SLP6A) Genuine OEM pipe section for compatible HHT vent runs. ...

HHT SLP 3' (914mm) SL Pipe Length - Flexible Venting (SLP-FLEX-3) Flexible OEM liner for tight or offset vent routing. Complete your installation w...

HHT SLP 5' (1524mm) SL Pipe Length - Flexible Venting (SLP-FLEX-5) Flexible OEM liner for tight or offset vent routing. Complete your installation ...

HHT SLP 6" (152mm) Pipe Length - Black (SLP6-BK) Genuine OEM pipe section for compatible HHT vent runs. Complete your installation with the HHT SLP...

HHT SLP 90 Degree Elbow - Black (SLP90-BK) Route your vent run around obstacles with an OEM offset. Complete your installation with the HHT SLP 90 ...

HHT SLP 90 Degree Elbow (SLP90) Route your vent run around obstacles with an OEM offset. Complete your installation with the HHT SLP 90 Degree Elbo...

HHT SLP & DVP Attic Insulation Shield – Vent Pipe Safety Component Protect Your Attic & Vent System with Code-Compliant Insulation Shieldin...

HHT SLP & DVP Attic Insulation Shield (6 Pack) – Vent Pipe Safety Component Protect Your Attic & Vent System with Code-Compliant Insulation...

HHT SLP Cathedral Ceiling Support - Black (SLP-CCS-BK) Support and align the vertical vent run. Complete your installation with the HHT SLP Cathedr...