ALUMINUM F-CHANNEL - 3/8" x 12' **ROLLEX** DEEP BROWN | Rollex F-Channel Soffit Starter is durably formulated with aluminum construction, protecting against rust and corrosion. Designed with environmental friendly materials that provide exceptional durability, this product withstands against unpredictable weather conditions. Rollex F-Channel Soffit Starter comes in a 20-piece set and has dimensions of 12 ft L, 1-1/4 in W.