Castlewood Ascension Range Hood Insert 500 CFM
- Ventilation Type: Ducted/Vented
- Vent Hood Design: Range Insert Hood
- Mounting Type: Under Cabinet Mount
- Noise: 6 Sones
Last refreshed Jun 13, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A functional 500 CFM ventilator insert for a custom hood project, worth it mainly if you already have or are building the outer hood shell to house it.
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ASIN: B0C9MXZMY4Category: Range Hoods
Overview
The Castlewood Ascension SY-HVA-500-SS is a 500 CFM range hood ventilator insert built to mount under cabinet, with a stainless steel SS430 finish, 3 fan speeds, and 2 directional LED lights. It installs inside a hood shell rather than serving as a standalone visible hood.
As an insert, this unit is meant to sit hidden inside a wood or custom hood enclosure someone else builds, not to be the finished piece a buyer sees in the kitchen. The 6 inch outlet ships with a transition piece and backdraft damper for round ducting, and Castlewood rates it for cooktops up to 50,000 BTU, the figure to check against your range before buying. No rating or review data is available for this listing.
- 500 CFM, 3-speed ventilator insert
- SS430 stainless steel construction
- 6 inch outlet with backdraft damper transition piece included
- Rated for cooktops up to 50,000 BTU
Who it's for
Fits a custom range hood build where a carpenter or cabinet maker is constructing the visible shell and needs a ventilator insert to power it. Not a fit for someone who wants a complete, ready to mount hood with its own housing.
Pros and cons
- 500 CFM output with 3 speed settings
- Dishwasher safe aluminum mesh baffle filter
- Includes transition piece with backdraft damper for round ducting
- 2 directional LED lights included
- Insert only, requires a separate hood shell to install into
- Limited to cooktops up to 50,000 BTU
- No customer rating or review count listed
Performance notes
The 3-speed motor pushes up to 500 CFM through a 6 inch outlet, with a hybrid baffle filter using aluminum mesh that Castlewood states is dishwasher safe, and the included backdraft damper transition piece keeps outside air from being pulled back in when the fan is off. Castlewood caps this unit at cooktops rated 50,000 BTU or less.
Specifications
| Brand | Castlewood |
|---|---|
| Dimensions & fit | |
| Item Dimensions D X W X H | 11.25"D x 20.5"W x 9.5"H |
| Item Weight | 22 pounds |
| Capacity & performance | |
| Noise | 6 Sones |
| Number of Speeds | 3 |
| Air Flow Capacity | 500 cfm |
| Power & efficiency | |
| Voltage | 120 volts |
| Construction & materials | |
| Material Type | Stainless Steel |
| Color | Stainless Steel |
| Finish Types | Brushed |
| Compatibility & installation | |
| Mounting Type | Under Cabinet Mount |
| Included components | |
| Included Components | Damper, LED Lights, Prong Plug |
| Warranty & support | |
| Warranty Description | 1 year |
| Other details | |
| Ventilation Type | Ducted/Vented |
| Vent Hood Design | Range Insert Hood |
| Control Type | Push Button |
| Light Source | LED |
| Item Type Name | Range Hood Ventilator |
Frequently asked questions
Does the Castlewood Ascension come with its own visible hood housing?
No, it is an insert meant to mount inside an existing or custom-built hood shell, not a standalone finished hood.
What size cooktop can this ventilator handle?
Castlewood rates it for cooktops up to 50,000 BTU output.
Is the filter dishwasher safe?
Yes, the hybrid baffle filter with aluminum mesh is listed as dishwasher safe.