Type	Dimension(mm)	Specification	English units	Metric units	Remarks
HM-1	150 * 150 * 300	25 * 25 channels			Also available with any length between 150 mm and 500 mm
		Width of Channels	0.191 in	4.9 mm
		Wall thickness	0.04 in	1 mm
		Specific surface area	164.6 ft2/ft3	540 m2/m3
		Free cross section	67%	67%
HM-2	150 * 150 * 300	40 * 40 channels			Also available with any length between 150 mm and 500 mm
		Width of Channels	0.177 in	4.9 mm
		Wall thickness	0.027 in	0.7 mm
		Specific surface area	251.4 ft2/ft3	825 m2/m3
		Free cross section	65%	65%
HM-3	150 * 150 * 300	50 * 50 channels			Also available with any length between 150 mm and 500 mm
		Width of Channels	0.088 in	4.9 mm
		Wall thickness	0.027 in	0.7 mm
		Specific surface area	306.3 ft2/ft3	1005 m2/m3
		Free cross section	57%	57%
HM-4	150 * 150 * 300	43 * 43 channels			Also available with any length between 150 mm and 500 mm
		Width of Channels	0.113 in	4.9 mm
		Wall thickness	0.02 in	0.5 mm
		Specific surface area	304.8 ft2/ft3	1000 m2/m3
		Free cross section	72%	72%
HM-5	150 * 150 * 300	34 * 34 channels			Also available with any length between 150 mm and 500 mm
		Width of Channels	0.152 in	4.9 mm
		Wall thickness	0.016 in	0.4 mm
		Specific surface area	245.4 ft2/ft3	805 m2/m3
		Free cross section	79%	79%