Quadrant EnviroSeal is a high volume, low pressure (HVLP) foam system designed for smaller precision jobs, full insulation jobs and any job in between. The 55-gallon drums containing Quadrant EnviroSeal are hooked up and dispensed through the innovative Nitrosys HVLP Dispensing Unit. The Nitrosys HVLP Dispensing Unit auto-calibrates the A and B-chemicals while pre-heating the material and delivering it with third stream air to the gun at low pressures (< 250 psi) and high volumes. This system is perfect for new contractors, specialty and weatherization rigs for large contractors, and OEMs. Quadrant Enviro-Seal comes in 55-gallon disposable drums and is dispensed using the patented Handi-Gun IIยฎ Dispensing Unit or N+Metal Gun.