Choosing a 36-inch white range hood comes down to two structural questions: where it mounts (under-cabinet or island), and where the air goes (ducted outdoors or recirculated).
An island cooktop can’t take an under-cabinet hood, and a ducted-only model can’t run ductless without a conversion kit the manufacturer may not sell. Get those two answers right before you compare blower ratings, and the rest of the decision falls into place quickly.
Under-Cabinet, Island, Or Ducted: Which Mounting Style Fits Your Kitchen?
Mounting style is dictated by what sits above your cooktop. Under-cabinet models bolt to the underside of an existing cabinet, island models hang from the ceiling above a peninsula or island, and ducted models pull air outdoors through metal ductwork. Broan’s 403601 and 403602 show how specific “36-inch white” is in practice: both are white under-cabinet hoods at that width, and both are labeled ducted only.
Because these are ducted-only designs, there’s no ductless fallback built in. If your kitchen can’t vent outdoors — a mid-floor apartment, for example — you need a model explicitly convertible to recirculating, not one you hope to convert later.
Duct Sizing: The Mistake That Ruins An Otherwise Good Install
A 36-inch hood is not automatically compatible with the duct already in your wall. Width and duct format are separate specs, and models in this size class list formats as different as 3-1/4 x 10 in. rectangular and 7-inch round.
Broan lists the 403601 with a 3-1/4 in. x 10 in. ducted connection, an included duct connector, and a built-in damper, and the 403602 with a 7-inch round diameter and vertical duct direction. Match that number to your existing duct before ordering, or budget for an adapter — Venta Hood’s under-cabinet instructions note the single blower B100 wants 6-inch round duct or equivalent (28 square inches), while the dual blower B200 wants 8-inch round or equivalent (50 square inches).
| Model | Duct Format | Key Spec |
|---|---|---|
| Broan 403601 | 3-1/4 x 10 in. ducted | 210 MAX Blower CFM, ducted only, built-in damper |
| Broan 403602 | 7 in. round, vertical | 36 in. width, ducted only |
| Single blower B100 | 6 in. round or equivalent | 28 square inches of duct area |
| Dual blower B200 | 8 in. round or equivalent | 50 square inches of duct area |
| General guidance | Metal duct only | Short, straight runs; no sharp turns |
How High Should A 36-Inch White Range Hood Be Installed?
Installation height is a performance spec, not a preference. Broan-NuTone’s guidance places the hood 24 to 30 inches above the cooktop, while Venta Hood’s under-cabinet instructions tighten that to no more than 24 to 27 inches for a 9-inch-tall under-cabinet hood meant for optimum performance.
Duct material matters just as much. The installation documents call for smooth, galvanized metal duct — nonmetal flex duct undercuts airflow and isn’t what these hoods are designed around. Keep runs short and straight, avoid sharp turns, and seal the joints. Before you cut, align the hood exhaust with your cabinet cutouts; some steps genuinely take two or more people, and the final check is simple: power on and confirm both the lights and the fan operate.
If ducted models won’t work in your space, our tested 36-inch white range hood roundup covers convertible options worth comparing.
The Short Version
- Under-cabinet: pick this when the cooktop sits beneath a cabinet and you want a simpler, wall-adjacent install. The cited white 36-inch examples are ducted only.
- Island: pick this when the cooktop sits on a peninsula or island and the hood must hang from the ceiling.
- Ducted: pick this when the kitchen can vent outdoors — and verify your duct format (3-1/4 x 10 in., 6 in., 7 in., or 8 in.) matches the model before ordering.
- Height: 24 to 30 inches above the cooktop, or 24 to 27 inches for a 9-inch-tall under-cabinet hood.
- Duct material: metal only, short and straight, with sealed joints.
FAQs
Can a ducted-only hood be converted to ductless?
Usually no. Ducted-only is a hard product limitation, and the Broan models cited here carry that label directly. Converting requires the manufacturer to sell a specific recirculation kit for that model. If outdoor venting is impossible in your kitchen, choose a hood that’s explicitly built or listed as convertible before you buy.
Does a 36-inch hood fit my existing ductwork?
Not automatically. Width and duct format are separate specs, and 36-inch hoods ship with formats ranging from 3-1/4 x 10 in. rectangular to 7-inch round, some vertical only. Measure your existing duct and compare it against the model’s listed connection before ordering, or plan on an adapter or a duct change.
What’s the ideal mounting height above the cooktop?
General installation guidance puts the hood 24 to 30 inches above the cooking surface. Under-cabinet instructions go tighter, recommending no more than 24 to 27 inches for a 9-inch-tall under-cabinet hood to hit optimum performance. Mounting too high weakens capture; too low risks interfering with tall pots.
References & Sources
- Broan-NuTone. “403601 36-Inch Under-Cabinet Range Hood.” Confirms the white 36-inch ducted-only spec, 210 MAX Blower CFM, and 3-1/4 x 10 in. duct connection with built-in damper.
- Broan-NuTone. “403602 36-Inch Under-Cabinet Range Hood.” Lists the 36-inch width, 7-inch round diameter, ducted-only vent type, and vertical duct direction.
- Venta Hood. “JCWR9 Under-Cabinet Range Hood Installation Instructions.” Source for duct sizing requirements (B100 at 28 sq. in., B200 at 50 sq. in.), metal-duct-only guidance, and the 24–27 inch height recommendation for a 9-inch-tall hood.