NuTone® Mosquito Repellent System Expander Kit - Retail: $59 plus taxes HVRBRKTCX Features * The kit includes 1 fixture and 1 repellent refill * For use with NuTone Haven 4-pack kit #HVRBRKTCB * Effective protection against all types of mosquitoes * Over 216 hours of mosquito protection per each repellent cartridges * Durable construction * Easily connects to an existing installation * Install only once, enjoy season after season * Cover 110 sq. ft. and up to 550 sq. ft. with the 4-pack kit * 3-year limited warranty