High quality materials. A must for concentric venting good instructions include. Fast shipping in a quality package arrived on time in perfect condition.

I'm doing a self install and the ACF Greenhouse kits have proven excellent for a rookie like me. I went with the concentric exhaust kit to increase the efficiency of my GG75 in the garage. It is great to have everything I'd need packaged together - and comes with detailed instructions that were easy to follow. Five stars for sure!

The kit was missing the brackets for the disc that mounts to the outside, but service person had replacements shipped out promptly after I notified them. I wish it came with mounting brackets for the main box. All in all I am satisfied with the construction quality of the kit and would purchase again.

First rate quality build and materials. My only concern is the center line on the inlet and flue holes were off about an inch between this kit and the Sterling heater which required some “engineering” on my part. However the one question I called ACF Greenhouses was answered very efficiently and courteously. Good company to deal with.

Just got it all put togeather. Happy with it