4-XLT Rapid is a fast setting, multi-use, polymer fortified adhesive mortar for large format tile installations. 4-XLT Rapid offers tremendous utility for non-sag wall installations, medium bed build up and thin-set applications on floors. 4-XLT Rapid is built on LATICRETE Water Dispersion Technology (WDT) platform. WDT provides for the complete dispersion of water within the mix allowing users to achieve the desired application consistency. 4-XLT Rapid also features LATICRETE DUST LOCK Technology, dramatically reducing onsite mess both during transportation of the product as well as while mixing.