The Quest 110/150 Intake Duct Kit is the intake-side (return-air) ducting adapter for Quest Dual 110 and Quest Dual 150 dehumidifiers. The maker designates it the “Return Duct Kit,” and it consists of a plate with a duct collar attached; it does not include duct work or a register grill, with a 10″ duct collar. This page gives the maker’s published collar size, part number, and compatible units, explains where a duct kit fits, and is honest about the specs Quest does not publish. It is a sheet-metal ducting adapter, not a fan, filter, or the duct work itself.
What it is
The Quest 110/150 Intake Duct Kit lets you attach flexible duct to the air-intake (return) side of a Quest Dual dehumidifier, so the unit can pull air from — or be located outside of — the growing space. On the maker’s own catalog it is listed as the Return Duct Kit For Quest Duals 110/150. The kit is a plate with the duct collar attached, and does not include the duct work or a register grill — those are supplied separately to suit your run. Quest also advises it is best used in conjunction with part 4033039, the matching Supply Duct Kit, so both the intake and the dry-air outlet can be ducted.
Specifications
| Product type | Intake / return-air duct kit (sheet-metal plate + collar) |
|---|---|
| Duct collar diameter | 10″ |
| Kit contents | plate with duct collar attached; duct work and register grill not included |
| Compatible units | Quest Dual 110 (4034220) and Quest Dual 150 (PN 4034230) |
| Maker part number | 4039697 |
| Pairs with | Supply Duct Kit, part 4033039 (maker recommendation) |
Why choose it
- Purpose-made for the Quest Dual 110/150. The plate is cut to match the intake face of the Quest Dual 110 (4034220) and Quest Dual 150 (4034230), rather than being a generic universal collar.
- Standard collar size. The attached 10″ duct collar takes common flexible ducting, so you can source the duct run separately.
- Lets you locate the unit remotely. Ducting the intake means the dehumidifier can sit outside the canopy area and still draw room air, which helps with noise, heat, and floor space.
- Half of a complete duct set. Quest advises pairing it with the Supply Duct Kit (part 4033039) so both the intake and the dry-air discharge are ducted.
Best uses
- Remote-mounting a Quest Dual dehumidifier. Use it when you want the Quest Dual 110 or 150 to pull air through duct rather than directly from the room it stands in.
- Building a full ducted set. Combine it with the Supply Duct Kit (4033039) and your own duct work for a fully ducted install.
- Retrofitting an existing room. Add it when you need to route the intake through a wall or plenum to an existing Quest Dual unit.
Compatibility
This kit is model-specific. It fits the Quest Dual 110 (4034220) and Quest Dual 150 (4034230) only — it is not the duct kit for the overhead-style Quest Duals or the single-fan Quest units, which use their own plates. The 10″ collar accepts standard flexible ducting of the same nominal diameter; the duct work and any register grill are bought separately.
How the two duct kits differ
The intake (return) kit and the supply kit do different jobs; a fully ducted Quest Dual uses both.
| Factor | This kit (intake / return) | Supply Duct Kit |
|---|---|---|
| Side of the unit | air-intake / return-air side | dry-air outlet / supply side |
| Maker part number | 4039697 | 4033039 (per the maker) |
| Included | plate with duct collar; no duct work or register grill | held — the supply kit’s contents are not restated here |
Where it fits
For fans, ducting, clamps, and other air-movement parts, browse the ducting & accessories category. Related parts to complete a ducted install:
- Active Air Premium Ducting (8-inch) — flexible duct work to run to and from the collar.
- Insulated Ducting — insulated duct for runs where condensation on the return line is a concern.
- Stainless Steel Duct Clamps — to seal the duct to the collar.
- Can-Filter Flange — a collar/flange for pairing filtration into a duct run.
- Anden Duct Kit A210V1 — a comparable duct kit for an Anden dehumidifier.
- Hydro-Logic Poly Tubing (3/8 in, 50 ft) — poly tubing for the drain-line side of a dehumidifier install.
Frequently asked questions
Which units does it fit? The Quest Dual 110 (4034220) and Quest Dual 150 (4034230).
What size duct does it take? The collar is 10″.
Does it include the duct work? No — it is the plate with the collar; duct work and register grill are not included.
What is the maker part number? 4039697.
Who this is for — and who should skip it
Suited: owners of a Quest Dual 110 or 150 who want to duct the intake so the unit can be remote-mounted or draw from a specific space, and who will supply their own duct work.
Not for / its limits: it is only the intake-side plate and collar — not a fan, not a filter, and it does not include duct work or a register grill. It fits only the Quest Dual 110/150 intake face, not other Quest models. For a fully ducted setup you also need the Supply Duct Kit (part 4033039).
HELD (not stated because not sourced): the maximum recommended duct run; the collar material and gauge; the kit’s weight and shipping dimensions; register-grill sizing; the Supply Duct Kit’s own specifications; the warranty term (held per M-05); and the live retail price (the storefront price field is the source of truth at deploy).
Ready to duct your Quest Dual? Add to cart, or talk to a grower about matching duct kits and duct work to your dehumidifier.
Sources
- Quest Climate — Return Duct Kit For Quest Duals 110/150 maker product page (HTTP 200, retrieved 2026-07-08 via WAF-immune fetch; PRIMARY source): kit includes plate with 10″ duct collar attached; does not include duct work or register grill; best used in conjunction with 4033039; compatible products Quest Dual 110 (4034220) and Quest Dual 150 (PN 4034230); part number 4039697: https://www.questclimate.com/accessories/return-duct-kit-for-quest-duals-110-150/
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