The BFRK 100 Bath Fan Retrofit Kit from Morris Products is designed to upgrade existing bathroom ventilation systems. This kit features a 4-inch fan capable of delivering 135 CFM, ensuring effective air circulation and moisture control. The retrofit design allows for easy installation in most standard ceiling openings, making it a convenient solution for homeowners and contractors. Constructed from durable materials, this fan is built to withstand the humid environment of bathrooms. Its energy-efficient operation helps reduce energy costs while maintaining optimal performance, making it an eco-friendly choice for bathroom ventilation.