The higher the number, the wider your teeth will be. Here is an example of the plastic molded zippers and their different size teeth. And another example, this time with nylon coil zippers: The higher the number, the wider the coil. It's that simple! I hope this helps you determine the right zipper for your project.
1 The cost to repair a chimney crown will depend on the size of the chimney and how easy it is to access the chimney. 2  Depending on the severity of the job, the average cost of chimney crown repair will range anywhere from $400 to as much as $2,200. If the chimney crown is extensively damaged, it will often have to be rebuilt. 2  If this is the case, you will be looking at a price closer to that $2,000 range. 3  However, if the chimney only has smaller hairline cracks, then the repair could be as little as $400.
1 Custom fit chimney reliners can cost anywhere from $2,000 to $3,000. 2  For those that want to do the job themselves, chimney liners can cost anywhere from $80 to $500 depending on the length and brand. 3  For example, the 25 foot Simpson DuraFlex retails for $265 to $310. On average, a chimney reline job can cost anywhere from $49 to $82 per linear foot. 2  Most chimneys are going to be within 20 to 25 linear feet. 3  The price for chimney relining depends on the type of materials that will be used for the job.