Sirr0und Builders Best 4"Close Elbow Dryer Vent Turns 90 deg. within 4-1/2" clearance. Snap-lock fittings. Rotating collars. Includes clamp for wall or dryer connection. Best choice for 90 deg. turns. Heavy-gauge drawn aluminum. Bagged. MPN# 10161 SKU# 274534UPC# 722048101616