SKU: 31392884926

Rectorseal 81911 Ceiling Diffuser Round 8 Inch White Plastic for 6/7/8 Inch Duct

$47.70 $53.00
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Ships within 48 hours · Estimated delivery Aug 8 - Aug 13

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Description

Rectorseal 81911 Ceiling Diffuser Round 8 Inch White Plastic for 6/7/8 Inch DuctThe Plastic Ceiling Diffuser with Incorporated Ceiling Box 8"x8" (SKU: 81911) is engineered for fast, one man installation from below the ceiling, making it an ideal choice for residential and light commercial HVAC systems. With its all in one design, this diffuser combines a durable high grade polymer grille, integrated damper, and ceiling box for unmatched convenience and speed. The stepped collar accommodates multiple duct sizes, with easy tear

The Plastic Ceiling Diffuser with Incorporated Ceiling Box – 8"x8" (SKU: 81911) is engineered for fast, one-man installation from below the ceiling, making it an ideal choice for residential and light commercial HVAC systems. With its all-in-one design, this diffuser combines a durable high-grade polymer grille, integrated damper, and ceiling box for unmatched convenience and speed.

The stepped collar accommodates multiple duct sizes, with easy tear-away collar tabs to match your specific installation requirements. A mounting clip secures the diffuser to ceiling thicknesses up to 1-1/4", ensuring a reliable, hassle-free fit.

Its virtually airtight butterfly damper features a rubber gasket for superior sealing when closed, helping improve efficiency and prevent air loss. The damper handle, accessible from below, allows smooth adjustment from fully open to completely closed—no ladder or attic access required.

Built from high-grade polymer, the grille resists breakage, scratching, yellowing, and fading, maintaining its clean, professional appearance for years. The one-piece grille, damper box, and ceiling box design makes installation lightning fast, saving valuable time on every job.

Key Features:

  • 8"x8" square diffuser with integrated ceiling box for streamlined installation

  • Stepped collar fits multiple duct sizes; tear-away tabs for quick adjustments

  • Mounting clip accommodates ceiling thicknesses up to 1-1/4"

  • Virtually airtight butterfly damper with rubber gasket for superior seal

  • Easy-access damper handle for airflow control from below

  • High-grade polymer grille resists damage, discoloration, and wear

  • All-in-one construction for rapid one-man installation without attic access

Ideal For:
HVAC professionals and DIY installers looking for a durable, efficient, and easy-to-install ceiling diffuser for residential or light commercial spaces.

SKU: 81911

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 31392884926

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4.1 ★★★★★
Based on 25 reviews
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Verified Purchase
Finngirl
Bozeman, US
★★★★★ 5
Good quality, smooth feel
I got these briefs so recently that have washed just one pair so far. First off, these are very comfortable, the material is soft & bordering silky, good quality sewing. Wash well and minimal if any shrinkage. They do come a bit wrinkled from the dryer but hey, these are underwear and will go on smoothly. If it were a t-shirt, I would look sloppy. I feel the sizing is accurate. No rolling and these don't announce themselves under clothing. Planning on getting more of these boxers and replacing my old panties.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 31, 2026
S
Verified Purchase
Skurtzo
Fort Morgan, US
★★★★★ 4
A little snug on the thighs
Size: Medium, Color: Multicoloured G (5-pack)
Super comfy, soft and thin. For reference, I'm 5'6", 135, athletic build. I bought medium. I almost returned them because I thought they were a bit too snug on my thighs, and my thighs are not large at all. I was concerned about panty lines under snug clothing. But, because they're thin, I figured they would probably stretch, so I kept them. So far, I've only worn them under a night shirt, but they're super comfortable and they dont ride up at all. Very nice, but if your thighs are a little thick, you probably won't like them.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 29, 2025
S
Verified Purchase
Shanna
Dallas, US
★★★★★ 5
Functional + Sexy
Size: Small, Color: Multicoloured E-(5-pack), Size: Small, Color: Multicoloured E-(5-pack)
Not only do these feel good, my husband can’t keep his hands off me. They fit so good and are soft. I change into these to sleep but also just use them as shorts to wear around the house. They’re comfortable and don’t slide around. I got a size small and I’m 100lbs.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 13, 2026
C
Verified Purchase
ClairY
Los Angeles, US
★★★★★ 5
Finally!
Size: X-Large, Color: All Black D (5-pack)
Finally, comfortable underwear that don’t end up giving me a wedgie. I have a round booty and most cuts of underwear end up shifting as I walk and sit. The hem of the underwear comes right under my cheeks and the lightweight material ensures there’s no panty line and no shifting to where I don’t want them! I’m definitely purchasing more.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2026
A
Verified Purchase
Amazon Customer
Natrona Heights, US
★★★★★ 3
Ehh
Size: Medium, Color: Multicoloured E-(5-pack)
Very thin, still comfy but very thin material. Super soft though. I've worn and washed and they have held up but I won't be repurchasing bc these are so thin
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 14, 2026

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