ridgehawk rolled ridge vent with nails, 20 ft l roll, 11 in w. includes coil of nails, for use on roof ridges and hips; breathable fabric helps prevent weather, dust, and bug infiltration; enhanced edge strength resists compression and dimpling during installation; 15 sq in nfa per linear ft; nail gun friendly, rolls out flat and provides a uniform installation, easily bends over roof pitches 3/12 - 18/12; passed tas 100(a) testing for resistance to wind-driven rain infiltration, limited lifetime warranty