N-Fit 4" Filter Sock Opening Cover

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.