Plastic Econoline Ladder 2-Tread Kit With Hardware - 17.25 Inch Width pool-dimensions_16.5x35.5 This opening allows introduction of

This opening allows introduction of air or water pressure into the system you are testing

Please note the IN is not 4 inches

The redesigned aboveground Kreepy Krauly Lil Shark pool cleaner cuts a 10 inch wide path for quick and thorough cleaning

The tester's probe is dipped into a sample of pool water and the results are ready instantly

This is a Taylor Drop Test Hardness Calcium/Total EDTA Titration Test Kit

Plastic Econoline Ladder 2-Tread Kit With Hardware - 17.25 Inch Width pool-dimensions_16.5x35.5 This opening allows introduction ofThis is a package of two S. R. Smith Econoline 17. 25 inch replacement ladder treads which are designed for 1. 90 inch rails. Made of high impact plastic, this step tread is recommended for residential ladders. Hardware is included: 3 8 inch x 3 1 4 inch bolts, washers and hex nuts. Our ladder tread width measurements are from center to center. Please measure the center to center dimensions of your rails before ordering.