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Results of Testing the Effective Venting Area of the Products
Property	Unit	Result Cobra®		Result Exhaust Vent Cobra® Ridge Runner® Exhaust Vent	Result Cobra® Snow Country Advanced™ Exhaust Vent		Result Cobra® Snow Country™ Exhaust Vent
Width	mm	267	299	292	229	292	292
Effective venting Area	m²	0.0085	0.0068	0.0114	0.0191	0.0199	0.0191

Results of Testing the Performance of the Products
Property		Requirement	Result Cobra® Exhaust Vent	Result Cobra® Ridge Runner® Exhaust Vent	Result Cobra® Snow Country™ Exhaust Vent
Traffic load	900 N over 125 mm × 125 mm	No crack, split, shatter or tear	Pass	Pass	-
Wind uplift	40 cycles of 0 to 600 Pa	No damage	Pass	Pass	Pass
	70 cycles of 0 to 1 200 Pa
	20 cycles of 0 to 1 800 Pa
	20 cycles of 0 to 2 500 Pa
Watertightness	80 km/h @15 mins	No water penetration	Pass	Pass	Pass
	0 km/h @ 5 mins
	100 km/h @15 mins
	0 km/h @ 5 mins
	120 km/h @ 15 min
	0 km/h @ 5 mins
	140 km/h @ 15 min
	0 km/h @ 5 mins
	170 km/h @ 15 min
	0 km/h @ 5 mins

Physical Properties of the Roll-Style Ridge Vent
Property	Unit	Requirement	Result
Thickness	mm	≤ 5% from nominal as stated by the manufacturer	Pass
Width	mm	≤ 1% from nominal as stated by the manufacturer	Pass
Mass per unit area	kg/m²	Report nominal value	1.01

Physical Properties of the Rigid Plastic Ridge Vent
Property	Unit	Requirement	Result
Thickness of liner or shell	mm	≤ 5% from nominal as stated by the manufacturer	Pass
Overall height			Pass
Width			Pass
Length			Pass
Density	kg/m³	≥ 905	906
Tensile strength (yield)	MPa	≥ 19	10.4 ^{Footnote (1)}
Izod impact resistance at 23°C	J/m	≥ 70	254.4
Coefficient of linear expansion	μm/(m∙°C)	< 150	84.8
Classification deflection temperature under load	°C	Report value	82.7 @ 0.455 Mpa
Classification melt flow rate	g/10 mins	Report value	26.2

Results of Testing the Durability of the Roll-Style Ridge Vent
Property	Unit	Requirement	Result @ 10% compresion	Result compression @ 25%
Compressive Strength initial	kPa	Report value	1.92		5.73
Compressive Strength after UV weathering	% retention of original	≥ 90	171		153
Compressive Strength after UV weathering and heat aging	% retention of original	≥ 80	132		122

Results of Testing the Durability of the Rigid Plastic Ridge Vent
Property		Unit	Requirement	Result
Dimensional change after heat aging	thickness	% of original	≤ 2	1.8
	height	% of original	≤ 2	-0.2
	width	% of original	≤ 2	0.5
	length	% of original	≤ 2`	-0.1
Tensile strength after heat aging		% retention of original	≥ 90	111
Izod impact after heat aging		% retention of original	≥ 80	121
Izod impact after heat aging and UV weathering		% retention of original	≥ 80	135