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Recessed Crawl Space Vent Cover vs Outward Mounted Crawl Space Vent Cover 8x16

Both are non-opening plastic seals for an 8x16 foundation vent, so the choice comes down to mounting. The Recessed cover sits inside the opening and is the better fit for thin walls, block foundations and flush finishes. The Small Outward Mounted cover screws over the face of the opening, which is more forgiving on irregular or oversized openings. Owners of the recessed style report a clean seal; the outward style is the simpler retrofit when the opening is not square.

  • Choose the Recessed Crawl Space Vent Cover if your foundation opening is a true 8x16 in a thin or block wall and you want the cover flush with the surface.
  • Choose the Small Outward Mounted Crawl Space Vent Cover if your opening is slightly off-size or irregular and you want a cover that installs over the face without cutting into the wall.

Prices

  • Recessed Crawl Space Vent Cover: $8.00 at fabrikaznakov.com.ua (last seen Nov 9)
  • Outward Mounted Crawl Space Vent Cover 8x16: $21.00 at Crawl Space Door Systems (checked today)
  • Difference: the Recessed Crawl Space Vent Cover is $13.00 cheaper than the Outward Mounted Crawl Space Vent Cover 8x16 at the latest prices (Nov 9 and Nov 11)
R
Recessed Crawl Space Vent Cover - Shallow Depth Encapsulation Seal

Recessed Crawl Space Vent Cover

Recessed Crawl Space Vent Cover - Shallow Depth Encapsulation Seal

4.8(12 ratings)
$8.00at fabrikaznakov.com.uaChecked Nov 9
See all prices and details
Visit fabrikaznakov.com.ua
Pros
  • Flush recessed profile looks finished on the foundation
  • Shallow 1-1/4 in depth fits thin walls and block construction
  • Mounts from inside, so no ladder work on the exterior
  • Corrosion-resistant plastic for damp crawl spaces
Cons
  • Fasteners and adhesive are sold separately
  • Little tolerance for openings that are not close to 8x16
  • Not paintable in every color match
S
Small Outward Mounted Crawl Space Vent Cover - Encapsulation Seal

Outward Mounted Crawl Space Vent Cover 8x16

Small Outward Mounted Crawl Space Vent Cover - Encapsulation Seal

5(5 ratings)
$21.00at Crawl Space Door SystemsChecked 54 min ago
See all prices and details
Visit Crawl Space Door Systems
Pros
  • Overhangs the opening, so it handles slight size variation
  • Single piece, quick to place over the vent
  • Paintable ABS blends with the foundation
  • Works as a retrofit without cutting block
Cons
  • Sits proud of the wall rather than flush
  • Only listed in black
  • Less depth control than a recessed cover on thin walls

What separates them

Recessed Crawl Space Vent CoverOutward Mounted Crawl Space Vent Cover 8x16
MountingRecessed into the opening, installed from inside the crawl spaceOutward mounted over the face of the opening
Fit toleranceNeeds a close 8x16 opening; irregular sizes are a problemOverhangs the opening, so slight size variation is absorbed
Depth1-1/4 in inside depth, suited to thin walls and blockFlat cover with no recess depth to clear
MaterialPlastic, corrosion-resistantABS, paintable
FinishWhite or blackBlack, paintable to match the foundation
HardwareFasteners and adhesive not includedSingle-piece cover; check what fasteners ship with it
Install routeNails to floor joists or replaces a foundation blockScrews directly over the existing vent opening
Air sealingBlocks outdoor air infiltration from inside the cavitySeals the vent face from outside

Price history

$29.99$8.00
Nov 4Nov 11
  • Recessed Crawl Space Vent Cover: lowest $8.00 on Nov 9 at fabrikaznakov.com.ua; $12.00 on Nov 11.
  • Outward Mounted Crawl Space Vent Cover 8x16: lowest $29.99 on Nov 9 at Amazon; $29.99 on Nov 10.

Prices at every store

Recessed Crawl Space Vent Cover

  • fabrikaznakov.com.uaNew

    Availability unknownShips from Ukraine · duties may apply

    $8.00Checked Nov 9
    Visit fabrikaznakov.com.ua
  • Crawl Space Door SystemsNew

    Availability unknown

    $12.00Checked 1 h ago
    Visit Crawl Space Door Systems
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $24.99Free shippingChecked 1 h ago
    Visit Amazon
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $29.99Checked Nov 4
    Visit Amazon

Also available at

  • Crawl Space Door SystemsCheck price at Crawl Space Door Systems
All 6 stores and price history →

Outward Mounted Crawl Space Vent Cover 8x16

  • Crawl Space Door SystemsNew

    In stockReturn policy

    $21.00Checked 54 min ago
    Visit Crawl Space Door Systems
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $29.99Checked Nov 10
    Visit Amazon
All 2 stores and price history →

Specs compared

SpecRecessed Crawl Space Vent CoverOutward Mounted Crawl Space Vent Cover 8x16
Height9.75-in10"
Width17.25-in18"
MaterialPlasticABS
ColorWhite, BlackBlack
TypeVent Cover—
Is InlineNo—
Vent TypeFoundation Vent Cover—
Mounting LocationFoundation—
Mounting StyleRecessed mount—
Depth1-1/4 inches (inside depth)—
DimensionsInside depth of 1-1/4 inches—
Length17.25 in—
Show all 31 specsShow fewer specs
SpecRecessed Crawl Space Vent CoverOutward Mounted Crawl Space Vent Cover 8x16
ApplicationCrawl space—
UseVentilation—
Typical RoomsCrawl space—
Typical EnvironmentCrawl spaces, Closed crawl spaces, Conditioned …—
Typical UsersHomeowners—
Installation LocationFoundation—
Installation TypeRecessed—
Mounting Hardware IncludedNo—
Included AccessoriesFasteners (not included), Adhesive (not include…—

What reviewers say

Recessed Crawl Space Vent Cover

  • 4.8 / 512 ratings

Only 12 ratings so far, averaging 4.8 out of 5. Buyers who mention it report it does the sealing job in encapsulation projects. There is too little feedback to judge long-term durability.

What people mention
  • FitPraisedBuyers say it fits standard 8 x 16 openings and seals well.
  • HardwareCriticisedFasteners and adhesive are not included, so buyers supply their own.
  • BuildMixedThe plastic is corrosion-resistant, but long-term durability is not yet well reported.

Questions and answers

Which is better for a block foundation?
The recessed cover. Its 1-1/4 in depth is built for block walls and thin foundations, and it replaces a standard block vent cleanly. The outward cover works too but sits proud of the block face.
Which handles an opening that is not exactly 8x16?
The outward mounted cover. It installs over the face and overhangs the opening, so small oversize or irregular cuts are covered. The recessed cover needs a close fit to seal.
Do either come with screws or adhesive?
The recessed cover lists fasteners and adhesive as not included, so plan on buying both. Confirm what ships with the outward cover before installing.
Will these stop moisture and mold in a crawl space?
They close off passive ventilation, which is the point during encapsulation or conditioning. They are one part of the job; you still need a vapor barrier and moisture control inside.
Is the outward cover worth stepping up to over the recessed one?
Only if fit is your problem. If your opening is true 8x16 and you want a flush finish, the recessed cover is the cleaner choice. If the opening is irregular, the outward cover saves you from reworking the wall.

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Buying guides that pick them

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Shape
Rectangle
—
Design HighlightsNon-opening feature—
Installation HighlightsFor nailing to floor joists or as foundation bl…—
Accessory TypeVentilation Accessory—
Intended UseDeters entry of debris and animals—
Weather ResistanceCorrosion-resistant—
Opening size—8" × 16"
Mounting—Outward mounted
Finish—Paintable
Number of pieces—1