When you're working through ventilation ducting air distribution, the decision can feel split in two directions: one listing is a bare component for about a dollar, while three others are complete inline fans with the same name and slightly different prices. Do you need a replacement supply or a full airflow solution? And if you need the fan, does paying more get you anything different?
Quick take
The four listings here break into two practical groups. First is the Selkirk 104180, an open-box ventilation supply priced at USD 1.08. It's not a fan, so it won't move air on its own. The other three listings all share the exact product title: 6" 418CFM IP67 Waterproof Inline Duct Fan, Low Noise Ventilation Equipment. They all list the same core specs: 6-inch inlet/outlet, 418 CFM airflow, IP67 waterproof protection, 115W power, 48dB noise, 3150rpm speed, and ABS/stainless steel construction in white. They differ mainly in listed price, and one listing includes a 3-year manufacturer warranty.
Listed price comparison
| Product | Listed Price | Price Bar |
|---|---|---|
| Selkirk 104180 Other Ventilation Equipment and Supplies | USD 1.08 | |
| 6" 418CFM IP67 Waterproof Inline Duct Fan | USD 62.87 | |
| 6" 418CFM IP67 Waterproof Inline Duct Fan | USD 91.42 | |
| 6" 418CFM IP67 Waterproof Inline Duct Fan | USD 92.05 |
Decision matrix
- Selkirk 104180 - Open-box supply, lowest price, no fan specifications.
- 6" fan at USD 62.87 - Cheapest complete fan with the shared 418 CFM / IP67 specs.
- 6" fan at USD 91.42 - Same core specs, but priced near the top of the range.
- 6" fan at USD 92.05 - Same core specs, plus a 3-year manufacturer warranty in the listing.
If you just need a ducting component, the Selkirk listing is the budget pick. If you need a complete inline fan, the real question is whether the warranty on the highest-priced fan justifies the price difference from the $62.87 fan.
Selkirk 104180 Other Ventilation Equipment and Supplies
At USD 1.08, this is the entry point for the group. It's a Selkirk component with MPN 104180, listed as New - Open box, and described as Other Ventilation Equipment and Supplies. That makes it a sensible choice when your ducting setup needs a small replacement part or an extra supply rather than a primary airflow device. The limitation is scope: this listing doesn't include fan specs like CFM or noise level, so you can't treat it as a substitute for the inline fan listings. It's best suited for supplementary hardware in a larger ventilation ducting air distribution plan, not as the main mover of air.
6" 418CFM IP67 Waterproof Inline Duct Fan (USD 62.87)
This is the least expensive complete inline fan in the set. It carries the shared specs: 6-inch diameter, 418 CFM airflow, IP67 waterproof protection, 115W power, 48dB noise, 3150rpm speed, and ABS/stainless steel construction. For a bathroom, greenhouse, basement, or similar space, this listing gives you the same core airflow and water resistance as the higher-priced fans. If your priority is getting a working inline fan at the lowest listed price, this is the one to anchor on. The trade-off is that the listing doesn't include the 3-year manufacturer warranty detail that appears on the $92.05 fan, so the savings come without that specific coverage statement.
6" 418CFM IP67 Waterproof Inline Duct Fan (USD 91.42)
At USD 91.42, this fan sits only about 63 cents below the highest-priced listing in the set. It has the same 6-inch 418 CFM spec, IP67 rating, 115W power draw, and 48dB noise level as the other two fans, and the listing also labels it as an exhaust fan. That type label makes it easy to see where it fits in kitchens, bathrooms, greenhouses, basements, warehouses, and similar spaces. The limitation is price: at this level, you're paying nearly the same as the $92.05 fan, so there's no meaningful cost advantage unless you prefer this listing's specific product details. If warranty wording matters to you, the $92.05 fan is the listing that carries it.
6" 418CFM IP67 Waterproof Inline Duct Fan (USD 92.05)
The highest-priced fan listing is the one that includes a 3-year manufacturer warranty in its product details. Beyond that, the specs match the other two fans exactly: 6-inch inlet/outlet, 418 CFM airflow, IP67 waterproof protection, 115W power, 48dB noise, and ABS/stainless steel construction. If having a stated manufacturer warranty makes you more comfortable with a fan that may run continuously, this listing bundles that into the price. The limitation is straightforward: it's the top of the price range at USD 92.05, so you're paying more for the same 418 CFM airflow that the $62.87 listing offers. Choose it when the warranty detail is worth the extra cost.
Final recommendation by use case
- Need a low-cost ducting supply or component: Selkirk 104180 at USD 1.08.
- Need a complete 6-inch inline fan on a budget: the USD 62.87 fan listing.
- Want a 6-inch inline fan with a 3-year manufacturer warranty stated in the listing: the USD 92.05 fan.
- Don't mind paying near the top and want an exhaust-fan type label: the USD 91.42 fan listing.
For most shoppers who need actual airflow, the USD 62.87 fan delivers the same core performance specs as the more expensive fan listings. The extra cost only becomes meaningful if the warranty on the USD 92.05 listing is a deciding factor for your ventilation ducting air distribution project.
