After you have installed your posts and strainer assembly you bolt your Insul-Strainer to your end post and slide the Zappa Rail into it. Using a Shifting Spanner or 20mm Spanner crank the insul-strainer up until the Zappa Rail is straight and tight, if you do not have sufficient tension on the Zappa Rail it will sag and warp. The insul-strainer is a permanent fixture on your end post making maintenance simple and minimal, ensuring your Zappa Rail always looks great!

Helpful Tip: Zappa Rail is easier to install on a warmer day.  We also recommend re-tensioning the rail on the first warm day after installation, to eliminate any warps or twists.

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