Photo of Airmax SilentAir 4 Lobe Black Knob
Photo of Airmax SilentAir 4 Lobe Black Knob
Photo of Airmax SilentAir 4 Lobe Black Knob
Photo of Airmax SilentAir 4 Lobe Black Knob
-20%

Airmax SilentAir 4 Lobe Black Knob

$11.99
$14.99
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Ships in 2–14 business days, depending on availability.

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Photo of Airmax SilentAir 4 Lobe Black Knob
Airmax SilentAir 4 Lobe Black Knob
$11.99
$14.99

The SilentAir 4 Lobe Black Knob is a replacement cabinet fastener designed to keep aeration system enclosures securely closed while protecting the compressor and internal components. A properly secured cabinet helps shield equipment from weather exposure, debris, and accidental access.

This knob features an integrated 1/4"-20 brass screw and is shaped for easy hand tightening without tools, making routine access and servicing quick and straightforward.

Why Choose the SilentAir 4 Lobe Black Knob?

  • Secure Cabinet Closure: Keeps the aeration cabinet firmly closed during operation.
  • Tool-Free Use: Four-lobe design allows easy hand tightening and removal.
  • Durable Construction: Brass screw resists corrosion and outdoor exposure.
  • Direct Replacement: Designed to fit multiple aeration system series.
  • Protective Function: Helps shield the compressor from moisture and debris.

PRO TIP

If the cabinet begins to rattle or vibrate, inspect the knob threads and cabinet mounting points. Replacing worn knobs helps maintain a tight seal and reduces unnecessary vibration over time.

  • Product Type: Cabinet securing knob
  • Knob Style: 4 lobe
  • Thread Size: 1/4"-20
  • Screw Material: Brass
  • Compatibility: Shallow Water Series, PondSeries, LakeSeries aeration systems
  • Function: Cabinet fastening and compressor protection

Shipping Information

We aim to get your pond and water garden supplies to you as quickly as possible.

  • Orders over $199 CAD ship free across Canada (excluding oversized items).
  • A flat rate of $14.99 applies to all smaller orders.
  • Standard delivery takes 1 to 4 business days.
  • Most in-stock items are dispatched within 24 hours.
  • Special order items may require 2 to 14 business days before shipping, depending on availability.
Returns & Exchanges

If something isn’t quite right, we’ve got you covered.

  • Returns are accepted within 30 days of delivery.
  • Items must be unused, in original packaging, and include all parts and proof of purchase.
  • Items marked as Clearance are final sale and cannot be returned or exchanged.

For full details, please review our Shipping Policy and Refund Policy.

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