Smooth, snap lock aluminum pipe is crimped on 1 end. Major city building codes require that any dryer ducting placed within a drywalled wall must be a minimum of 5' to eliminate seams, must be smooth in texture (no ribbing), and must be of steel or aluminum manufacture (no vinyl, mylar, or PVC) to eliminate lint fires.
|Country of Origin||USA|
|Dimensions||4 In. x 60 In.|