• N-Fit 4″ filter sock opening cover with the rotating flow opening
  • Three-layer N-Fit 4″ filter sock opening cover for 85–103 mm openings
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N-Fit 4″ Filter Sock Opening Cover

N-Fit 4″ Filter Sock Opening Cover

$19.99 USD
$19.99 USD
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N-Fit 4″ Filter Sock Opening Cover

One adapter fits virtually every standard filter sock opening.

This adjustable adapter uses three precision-cut acrylic plates (85 mm, 95 mm, and 105 mm) secured together with a center thumb screw. Rotate the plates to adjust the opening size, regulate water flow, or fully close the opening when needed.

The modular three-layer design also allows different plate combinations, making it compatible with filter sock holders ranging from 85 mm to 103 mm in diameter. Instead of buying multiple fixed-size adapters, one unit covers nearly all common 4″ filter sock openings.

  • Fits filter sock openings from 85 mm to 103 mm.
  • Three interchangeable acrylic plates: 85 mm, 95 mm, and 105 mm.
  • Adjustable flow control by rotating the plates.
  • Can fully or partially close the opening.
  • Precision CNC-cut acrylic construction.
  • Tool-free adjustment with center thumb screw.
  • One adapter replaces multiple fixed-size adapters.
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N-Fit 4″ Filter Sock Opening Cover N-Fit 4″ Filter Sock Opening Cover
$19.99 USD

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