GAF Tigerpaw 48 in x 100 ft 400 sq ft Polypropylene Roof Underlayment Railing Baluster WA01 Warranty Code N Assembly 314846561 WA01 Warranty Code N Assembly Required yes Color black Fuel Type charcoal Housing Material porcelain enameled Ignition Type no ignition system Number of Wheels 2 wheel Front Side Shelf no Grate Surface Material stainless steel Nominal Height 43 inch Nominal Width 32 inch Primary Cooking Area 508 square inch Total Cooking Area 508 square inch Nominal Depth 25 inch Cooking Diameter 26 inch Built In Thermometer yes Primary Cooking Area Range 401 600 square inch A 1 piece drive blade and anodized aluminum cylinder and magazine extend the life of this lightweight and durable tool Covers approximately 4 squares (400 sq ft) excluding laps Moisture control design: helps remove damaging moisture from your roof deck For use with asphaltic shingle roof systems may also be used with non asphaltic systems such as slate wood metal Excellent walkability: special surface helps provide excellent walkability versus conventional felts or typical synthetic underlayments Stronger: non woven construction provides greater tear strength than standard #30 felt Lightweight: at approximately 16 lbs it's easier to load and handle on the roof than conventional felts Cooler to work with: light grey surface is cooler in hot weather than black felts UV resistant: resists UV degradation for up to 180 days