I would be careful, it looks like the unapproved stuff from china that someone bought and is trying to unload

My experience has NOT been good, to say the least I am very frustrated. Placed order for PLEW832.36 1600CFM with 10' chimney extension Jun 20, 2011. ProLine informed me the design was changed, instead of one motor at 1600CFM, the redesign was 2 motors with 1000CFM. I asked about the venting, my response was we have a gasket that covers both outlets to converge into one, ok so I have 1 hole in my wall for the vent, is that right? yes was the answer. Vent did not arrive until Aug20 2011. Vent did not come with the gasket they said it would, I called to inquire about this and they now said it needed its separate vents to beyond the wall and then could be joined into 1 pipe. Installed about 2 days later. As our kitchen did not have a vent, we had to have one installed, quite a process, as we have a room above the kitchen. Turned on the vent and such a racket... quietest on the market, don't think so! So I called Tech support and spoke with Spencer, he said it was not supposed to sound like that and they would send another one to replace the one installed. Also, the chimney extension did not arrive at the same time, called and they said it was on its way, it was delivered Aug 26 @ 6pm! The new vent was delivered Oct 27 2011. Called the installer to come back and take out the old and replace with the new. Guess what! Still the noise, not as bad, but still very noisy. I placed a call to ProLine for tech support and was told he was out of the office and a message would be given to Spencer for a callback, I am still waiting for that call. I was looking for a different type of "Y" connecter and a distribution center for HVAC advised me to call a company which specializes in vent work. I did, they took a look and said it needs 2 separate vent runs. However as they were preparing to do the work yesterday late afternoon, they removed the vent pipe and still the noise on one of the motors, sounds like the left. The installer said it sounded like the bearings were bad. I called and spoke with Heather, she said she could do nothing about it and will talk with Spencer on Monday. As a footnote, this company is a venting company, that is all they do, they install Viking, GE, Dacor, etc... high end vents, they have been in business for 40 years, so they should know what they are doing. All of this has been a great expense, each time they have to come back it is more money. Now, the vent company, will add additional vent at a cost of about $350. So this install process has cost us as much as the vent ... Vent with chimney $1000, first install $630, additional install $350. Also, manual that comes with the vent is for a single motor. I feel that if they changed the design, venting is a big process to making the vent work properly, they should have advised on that process and have new manuals made. I must say that Proline has been very accommodating, but they don't tell the truth about when the product will be here (too many conflicting excuses). I think 2 months wait each time is a little long for arrival. Perhaps they should put more vents on that slow boat from China! Sometimes what seems to be less expensive turns out to be more expensive, than if you had chosen a more expensive one in the first place. Please CHOOSE carefully.

My experience has NOT been good, to say the least I am very frustrated. Placed order for PLEW832.36 1600CFM with 10' chimney extension Jun 20, 2011. ProLine informed me the design was changed, instead of one motor at 1600CFM, the redesign was 2 motors with 1000CFM. I asked about the venting, my response was we have a gasket that covers both outlets to converge into one, ok so I have 1 hole in my wall for the vent, is that right? yes was the answer. Vent did not arrive until Aug20 2011. Vent did not come with the gasket they said it would, I called to inquire about this and they now said it needed its separate vents to beyond the wall and then could be joined into 1 pipe. Installed about 2 days later. As our kitchen did not have a vent, we had to have one installed, quite a process, as we have a room above the kitchen. Turned on the vent and such a racket... quietest on the market, don't think so! So I called Tech support and spoke with Spencer, he said it was not supposed to sound like that and they would send another one to replace the one installed. Also, the chimney extension did not arrive at the same time, called and they said it was on its way, it was delivered Aug 26 @ 6pm! The new vent was delivered Oct 27 2011. Called the installer to come back and take out the old and replace with the new. Guess what! Still the noise, not as bad, but still very noisy. I placed a call to ProLine for tech support and was told he was out of the office and a message would be given to Spencer for a callback, I am still waiting for that call. I was looking for a different type of "Y" connecter and a distribution center for HVAC advised me to call a company which specializes in vent work. I did, they took a look and said it needs 2 separate vent runs. However as they were preparing to do the work yesterday late afternoon, they removed the vent pipe and still the noise on one of the motors, sounds like the left. The installer said it sounded like the bearings were bad. I called and spoke with Heather, she said she could do nothing about it and will talk with Spencer on Monday. As a footnote, this company is a venting company, that is all they do, they install Viking, GE, Dacor, etc... high end vents, they have been in business for 40 years, so they should know what they are doing. All of this has been a great expense, each time they have to come back it is more money. Now, the vent company, will add additional vent at a cost of about $350. So this install process has cost us as much as the vent ... Vent with chimney $1000, first install $630, additional install $350. Also, manual that comes with the vent is for a single motor. I feel that if they changed the design, venting is a big process to making the vent work properly, they should have advised on that process and have new manuals made. I must say that Proline has been very accommodating, but they don't tell the truth about when the product will be here (too many conflicting excuses). I think 2 months wait each time is a little long for arrival. Perhaps they should put more vents on that slow boat from China! Sometimes what seems to be less expensive turns out to be more expensive, than if you had chosen a more expensive one in the first place. Please CHOOSE carefully.

par. 1: I mistook your (jviolet lee) earlier post for definitive baffle information that the provided link appeared to support. With two rows of baffles there shouldn't be a problem of relatively uniform air flow, so you can disregard for the Proline anything I wrote related to that. par. 2: I didn't comment on efficiency exactly, only that it is possible to get away with one row of baffles if there is room to straighten the flow between baffles and aperture. Also, the more baffle area one has, the lower the air velocity through the baffles for the same blower flow rate, and hence (for equivalent baffle aerodynamics) the lower the noise. Deep capture volumes are not needed with baffles covering the entire aperture. Higher capture volume with full baffle coverage may have utility for transient plume conditions, such as suddenly removing a pan cover. In summary, as seen in the Wolf hood, high capture volume is not needed in such configurations. The caveat is that this requires that the flow rate (CFM) be sufficient that the rising plume velocity (ft/min) roughly equals that of the airflow through the baffle gaps. This is achieved at around 90 CFM/square foot of aperture area (depending on plume). par. 3: To clarify terminology: Capture area is the effective size of the hood bottom aperture through which the cooking effluent passes. It is approximately equal to the physical size (square feet) of the opening, but may include some small fringing capture of lower velocity plume components. I do not count this peripheral area, but note that it exists. Capture volume (cubic feet) is the volume between the aperture and the baffles. In commercial hoods this is large, but in residential hoods it is modest to nil. Nil allows some modern looking designs, but I would worry that containment might be compromised with no barrier at the ends of the baffles. This flush filter scheme is probably best used with mesh filters. This is not a plug for mesh filters. The concept of efficiency is relevant to the commercial realm. Here full capture and containment at the lowest electrical power and heating cost is the measure of maximum efficiency. Commercial hoods (with commercial make-up air systems) aim for maximum efficiency. Pro residential hoods typically strive to look pro while not degrading performance much. Efficiency is not a driver as full power operation in residences happens rarely compared with commercial settings. kas