The Rectorseal Airtec Ceiling Diffuser – Model 81905 offers a fast, hassle-free solution for air distribution in residential and commercial HVAC systems. Crafted from high-impact polymers, this diffuser delivers long-lasting performance, resisting yellowing, rust, and scratches even in challenging environments.

Its innovative design features quick tear-off collar bands to easily adjust for different duct sizes, while the integrated airtight damper ensures efficient airflow control and energy savings. The paintable, scratch-resistant faceplate blends seamlessly into any décor, making it an attractive and functional choice for new installations or replacements.

Designed for one-person installation in minutes with no special tools required, this ceiling diffuser is ideal for dropped ceilings and other easy-access applications.

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Key Features:

• Effortless installation – one-person, tool-free setup in just minutes

• Adjustable fit with quick tear-off collar bands for multiple duct sizes

• Durable construction from high-impact polymers for long life

• Resistant to yellowing, rust, and scratches for lasting appearance

• Airtight butterfly damper with handle for winter shut-off or volume control

• Paintable faceplate for a custom look that matches any room décor

• Optional flanges for rough-in and dropped ceiling applications

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Technical Specifications:

• Material: High-impact polymers

• Compatible Duct Sizes: 4", 5", and 6"

• Maximum Ceiling Thickness: 1.25"

• Required Hole Diameter: 7.25"

• AK Factor: 0.17

• Adjustability: Tear-off tabs for increasing collar size

• Special Features: Paintable, scratch-resistant faceplate, airtight damper

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✅ Ideal For: HVAC professionals, builders, and DIY installers who need a durable, adjustable, and visually clean ceiling diffuser that installs in minutes without special tools.