Lambro 427 Aluminum Snap Lock Pipe

Smooth aluminum ducting snap lock. Major city building codes require that any dryer ducting. Drywalled wall must be a minimum of 5′ to eliminate seams. Must be smooth in texture no ribbing. 4″ x 60″ Smooth aluminum ducting snap lock Major city building codes require that any dryer ducting Drywalled wall must be a minimum of 5′ to eliminate seams Must be smooth in texture no ribbing.