An internal stainless steel adjustable spring allows for smooth even closure under different weights, and generally meets all pool barrier codes. UV-stabilized materials are strong, self-lubricating, and weather-resistant. It is ideal for fence post diameters of 1-7/8" to 2", 2-3/8", and 2-7/8" (47.6 to 50.8, 60, and 73 mm), and gate frame diameters of 1-3/8" and 1-5/8" (35 and 41.2 mm). Gate widths can be between 3' to 4' (914 mm to 1.22 m). Contact CRL Technical Sales if the gate door exceeds 132 lbs. (60 kg) or 4' (1.22 m) in width. One pair per package.