All my in-line filters use 1/4" quick disconnects. It's 1/2" FNPT. I've added pictures to show my fittings used. I would discard these filters as they have the wrong labels.
π§ Pentek 150467 Blue Housing Pressure: Optimal Solution for Filtering Water
10 Review
Hydronix CB 45 2001 Commercial Industrial Activated π§ Water Filter: The Ultimate Solution for Efficient Water Purification
7 Review
π§ The Ultimate Pentek Big Blue Housing NPT: Top-rated Choice for Exceptional Filtration
9 Review
Filter under the sink Aquaphor Crystal Eco
62 Review
NANPU 1 FRL Air Filter Regulator Lubricator Combo With 0-150 Psi Gauge, 5 Micron Brass Element, Poly Bowl & Semi-Auto Drain - Metal Bracket Included
20 Review
NANPU DFR-02 1/4" NPT Air Drying System - Double Air Filters, Air Pressure Regulator Combo - Semi-Auto Drain, Poly Bowl
20 Review
NANPU Air Drying System With Double Filters And Pressure Regulator Combo For Clean And Controlled Air Supply
18 Review
NANPU Compressed Air Filter Regulator Combo: Brass Element, Semi-Auto Drain, 0-150 Psi Gauge, And More
21 Review