The 3.500 CPLG .156X4 P42 A/C from Dresser Industries is a high-quality coupling designed for effective connection in air conditioning systems. Measuring 3.500 inches in diameter, this coupling features a wall thickness of .156 inches and a length of 4 inches. Constructed from durable materials, it ensures reliability and performance in various applications. This coupling meets industry standards, providing a secure and leak-free connection for fluid transfer and gas distribution. Its robust design makes it suitable for high-pressure environments, ensuring long-lasting performance in HVAC systems.