Outdoor Vent Hood Accessories

Do I need a duct cover?

A duct cover is the finishing enclosure that hides the ductwork between the top of the hood and the ceiling, so you need one whenever that run is visible. It is cosmetic rather than functional, which means the choice is driven by the gap you are covering. TrueFlame lists a fixed 12" duct cover for the TF-VH36-2, a telescopic 22" to 43" cover for the same hood, and a separate telescopic 22" to 43" cover for the TF-VH42-3, TF-VH48-3, TF-VH60-3 and TF-VH72-3. RCS lists the RVH36ADC for the RVH36A and a separate duct cover for the RVH48B.

How do I work out which duct cover length I need?

Measure from the top of the hood, once its mounting height is fixed, up to the finished ceiling, and choose a cover that spans that distance. A telescopic cover such as the TrueFlame 22" to 43" units adjusts across a range, which is the safer choice when the ceiling height is not yet final; a fixed 12" cover suits a short, known run. Confirm the measurement against the hood's own installation manual before ordering, because the hood's mounting height above the cooking surface is set by that manual and by local code, not by the look you want.

What is a duct cover filler for?

A filler closes the remaining gap when the duct cover alone does not quite reach the ceiling. TrueFlame lists fillers in 1/2", 4" and 8" depths, each listed for the TF-VH36-2 and the TF-VH4274-DC. Work out the shortfall after the hood height and the cover are settled, then pick the filler that matches it. The filler is listed against specific hood and duct cover models, so check that yours is named on the listing rather than assuming a filler of the right size will fit.

What does a vent hood spacer bracket do?

Spacers are offered in 4-inch and 8-inch depths and are always listed against a specific hood: RCS builds 4" and 8" spacers for the RVH36A and separate 4" and 8" spacers for the RVH48B, and TrueFlame builds 4" and 8" spacer brackets for each of the TF-VH36-2, TF-VH42-3, TF-VH48-3, TF-VH60-3 and TF-VH72-3. Exactly what a spacer changes in your installation, and whether your wall and hood combination calls for one, is set out in that hood's installation manual. Confirm it there and with your installer before ordering, since hood clearances are a code matter.

Are hood accessories interchangeable between brands or models?

No, and the product titles here are deliberately explicit about it. An RCS spacer is listed for the RVH36A or for the RVH48B, never both, and TrueFlame lists a separate spacer bracket for every hood in its range. The duct covers split the same way: one telescopic cover is listed for the TF-VH36-2 and a different one for the TF-VH42-3, TF-VH48-3, TF-VH60-3 and TF-VH72-3. Find your hood's model number on its rating plate or in its manual, then buy only parts whose listing names that model.

What is the Wye duct fitting used for?

The TrueFlame Wye duct fitting is a duct fitting listed for the TF-VH42-3, TF-VH48-3, TF-VH60-3 and TF-VH72-3 hoods, so it applies only to that three-blower range. How the ductwork is actually laid out, what diameter it runs at and where it terminates are engineering decisions that affect how well the hood performs and whether the installation passes inspection. Have the duct run designed and installed by a qualified professional working to the hood's installation manual and your local code, rather than assembling fittings by eye.

How do I find the right accessories for my hood?

Start from the model number, not the size. A 36-inch hood could be an RCS RVH36A or a TrueFlame TF-VH36-2, and they take entirely different spacers and duct covers. The number is on the hood's rating plate and on the front of its installation manual. Once you have it, every accessory in this collection names the hoods it fits in its own title, so you can match on the code directly. If you have not bought the hood yet, choose it first from outdoor vent hoods and order the accessories to suit.