Product review (3 stars): Evacuates fumes adequately, but...
THE GOOD:
1- Evacuates fumes adequately.
2- Lighting is excellent. I kept the Halogen bulbs in place, unlike some others that recommended to replace them w/ LED. I tried LED's, but they don't get dimmed properly (controller must not be compatible), so you lose that benefit in exchange for more energy savings.
2- Metal filters are easy to remove and clean.
THE BAD:
1- Definitely NOT worth the $300. It has this typical "made-in-China" feel.
2- VERY flimsy construction. Sheetmetal used is only 0.02" thick (25 Ga). You need to handle it very carefully or you ding it. It gets mounted by 4 small screws engaging w/ 4 key-holed openings in the roof, but since the sheetmetal is so thin, it is not at all a solid installation and the roof gets deformed. Recommend to use extra large sheetmetal washer (not provided)
3- You are guaranteed to end up with bleeding fingers during the installation. Sharp edges galore, especially in removing the "knock-outs" for either round or rectangular exhaust. After the knock-out process you end up with mangled surfaces, luckily this is out of sight.
4- No damper for round ducts included.
3- Because of its feeble construction, it tends to vibrate at the highest fan setting. Luckily for me, it evacuates enough at the medium setting.
BOTTOM LINE:
Go to the store and "feel" the product before you buy .I would feel better if I paid about $100 for this.