Without it you run the danger of non-compliance and all the hazards it poses. http://[email protected]/phpinfo.php?a%5B%5D=%3Ca+href%3Dhttps%3A%2F%2Fforum.vgatemall.com%2Fmember.php%3Faction%3Dprofile%26uid%3D137116%3Epropane+gas+system+design%3C%copyright%3E%3Cmeta+http-equiv%3Drefresh+content%3D0%3Burl%3Dhttps%3A%2F%2Fbookmarkfeeds.stream%2Fstory.php%3Ftitle%3Ddo-it-yourself-vs-expert-central-heating-boiler-installation-pros-and-cons+%2F%3E