Model	Nominal Filter Rating (um)	Structure Protective Layer + Control Layer + Dispersion Layer + Reinforce Layer + Reinforce Layer	Thickness (mm)	Air Permeability (L/min/cm2)	Bubble Pressure (mm H2O)
XL5-1	1	100 + 400 × 2800 + 100 + 12 × 64 + 64 × 12	1.7	1.81	360 - 600
XL5-2	2	100 + 325 × 2300 + 100 + 12 × 64 + 64 × 12	1.7	2.35	300 - 590
XL5-5	5	100 + 200 × 1400 + 100 + 12 × 64 + 64 × 12	1.7	2.42	260 - 550
XL5-10	10	100 + 165 × 1400 + 100 + 12 × 64 + 64 × 12	1.7	3.00	220 - 500
XL5-15	15	100 + 165 × 1200 + 100 + 12 × 64 + 64 × 12	1.7	3.41	200 - 480
XL5-20	20	100 + 165 × 800 + 100 + 12 × 64 + 64 × 12	1.7	4.50	170 - 450
XL5-25	25	100 + 165 × 600 + 100 + 12 × 64 + 64 × 12	1.7	6.12	150 - 410
XL5-30	30	100 + 450 + 100 + 12 × 64 + 64 × 12	1.7	6.70	120 - 390
XL5-40	40	100 + 325 + 100 + 12 × 64 + 64 × 12	1.7	6.86	100 - 350
XL5-50	50	100 + 250 + 100 + 12 × 64 + 64 × 12	1.7	8.41	90 - 300
XL5-75	75	100 + 200 + 100 + 12 × 64 + 64 × 12	1.7	8.70	80 - 250
XL5-100	100	100 + 150 + 100 + 12 × 64 + 64 × 12	1.7	9.10	70 - 190
XL7-150	150	50 + 100 + 50 + 30 + 30 + 100 + 50	2.0	25.00	50 - 150
XL7-200	200	40 + 80 + 40 + 20 + 40 + 80 + 40	2.0	26.00	50 - 150
Weight (kg/m2)	5-layer sintered wire mesh(8.4) 7-layer sintered wire mesh (14.4)
Porosity (%)	40%