This Burnham Commercial sleeve is designed for use with 3 and 4 section PV models. The sleeve is a crucial component in the assembly of these models, providing a secure fit and ensuring optimal performance. It is constructed from durable materials to withstand the rigors of regular use. The product's dimensions are specifically tailored to fit the aforementioned models, ensuring seamless integration and easy installation. This sleeve is an original Burnham Commercial part, guaranteeing compatibility and reliability.