Zombiebox Portable Generator Exhaust Extension Silencer Kit | Exhaust Extension System | 3 Adapters Included | Reduced Noise | High Efficiency | Fits ALL Portable & Backup Generators | U.S. Company

Bought this to allow the exhaust to exit my generator shack due to heat and lack of fresh air . Generator wouldn't run closed up. After the exhaust Kit and a fan operated vent system. It runs well now. Kit is well made and includes all parts necessary for most instalations. Be aware that it is Not Quiet! Sounds like glass pack. Your neighbors probably won't like it, but you might smile.

Item is great. Flange needed modified for 5/16" bolts. Some grinding may be needed for clearance. We have a Generac generator, which is on the list. Have not gotten it installed yet, so I don't know the sound level yet.

Very nice kit worked well with my generator box

Super easy to install and custom fit to my generator setup. I did end up "corking" the exhaust port while not in use. I was worried rain might get in. In my head I thought it would reduce the noise more, but generators are so loud muffled or not. With this you will only bother your next door neighbor. Not the whole block.

Great product but I feel the price is a little high. It would be nice if the end of it (on the outside of the building) had a cover for when its not in use to keep rain out of it.

No instructions. Very very very loud. Generator began to smoke almost immediately. Put the old one back on, no problems. I would not recommend this is you are looking for something to keep it quieter.

Bought this for a Westinghouse 10500TFc Generator. After removing the spark arrestor, The exhaust adapter worked ok but you do need some high temp RTV gasket maker, bought some with a temp rating of 750 degrees and so far it fixed the small exhaust leak between the adapter and the muffler. The muffler, suppressor or baffle or what ever it is called that comes with the zombie box does not help hardly at all with reducing the sound and the flexible metal hose that comes with it is a bit short and does limit options for where the Generator can be placed, if this flexible metal hose was another 2 feet longer or even two of them with an adapter to connect them together would be good. The Westinghouse 10500TFc Generator is loud and was hoping the zombie box would have make it a bit quieter. The Generator is in a shed made from 1/2 - -3/4 inch plywood and is insulated for sound (Walls, and ceiling) and still it is loud. Overall it works well as an exhaust diverter but as something that keeps the noise down, not so much.

Nice package deal which makes it easier than gathering all the parts and pieces. The adapter flanges (2 in kit) did not fit my particular Briggs&Stratton muffler. I had to overdrill the existing holes in the adaptor flange to allow for mounting using original screws. I was concerned a bit about CO2 leakage into my shed so I sealed under around the Flange lip with exhaust sealant. The wall fitting was constructed fairly well, but it would be better if they added a better weld between duct and wall flange. I also spray painted mine with high heat paint to provide a more durable finish. I’ll see how it holds up. It would be nice if they offered a plug with a slight taper that you can insert into the wall tube when the muffler extension is not being used.

Product was perfect for what I needed. It extended the exhaust from our back-up generator and reduced overall noise level. Great product, easy to install, instructions were adequate.

No gaskets supplied for either of the exhaust adapters. Muffler moves in the bracket unless you use a band clamp (not included).

Left the spark arrester on as it made a better flush fit. Put my exhaust out through the floor of my shed and got another pc of extension from Canadian tire to place on the end and point out the shed bottom. Have fired it up a few times and it sounds good and looks like it will stay together.

Good quality.

Amazing! Perfect fit with my Champion generator 8,000W. Easy to install and decrease the sound.