IN series apply the third generation of heating insulation made from ACMF(Accurate Control Micro-cellular Foam) as insulation layer; IF series apply excellent inorganic non-flammable heating insulation felt as insulation layer.

IN series

inch	mm
1/4 〃	6
3/8 〃	9
1/2〃	13
3/4〃	19
1〃	25

IF series

inch	mm
2/5 〃	10
3/5〃	15
4/5〃	20
1〃	25
28	30