FP Trowel 301 CrownShield® Standard Epoxy Trowel Natural Quartz 250 Mils (6.5 mm), with 8175 CrownProTM Aliphatic Polyaspartic Finish Coat Flooring System, 1/4 Inch. The system is placed at a nominal 1/4 Inch (0.66 mm). It meets the Unified Facilities Guide Specification 09 67 23.15 requirements for a five-step aircraft hangar flooring system. It can be applied directly over Crown Polymers moisture mitigation primer when it is required. It is available with an optional integral cove base binder and natural quartz aggregate. It is also available with an optional fluid proofing and crack suppression membrane. It is VOC Compliant in all states and provinces in North America.