Muellar 511-918BC Pipe Reducing Hexagonal Bushing, 4" x 2", Threaded, Galvanized BESTSELLERS The ingenious design actually forces

The ingenious design actually forces the louver blades to pivot

RatX is an easy to use

5/16 Inch Socket Drive

Sized to fit 1/8" punch holes

Muellar 511-918BC Pipe Reducing Hexagonal Bushing, 4" x 2", Threaded, Galvanized BESTSELLERS The ingenious design actually forcesMeets the following specifications: Material: ANSI ASTM A 197, Dimensions: ANSI ASME B. 16. 3, B16. 14, B16. 39, Threads: ANSI B1. 20. 1. End Style: Threaded Nominal Size: 4 x 2 In Material Specification: ASTM A 197 Standards: ANSI B1. 20. 1 Threads Finish: Galvanized Dimensional Standards: ANSI ASME B. 16. 3, B16. 14, B16. 39. WARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer