Sierra coils are made with copper pipes featuring the following outer diameters:
5 mm | 7 mm | 7,94 mm (5/16") | 9,52 mm (3/8")
The inside of the copper pipes can be smooth or ribbed.
The available geometries (tube spacing) x (row spacing) are:
20 x 17,32 mm | 21 x 12,7 mm | 25 x 12,5 mm | 25 x 19 mm | 25 x 21,65 mm | 25 x 25 mm
The fins can be made of aluminium (with special surface finishing on request) or copper, with the following shapes:
flat | corrugated | louver
The frame can be made of:
galvanised steel | aluminium | aluminium alloys
The coils can be supplied with the following finned block:
flat | L bend | U bend | round
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