Flat Fin Radiators

Copper

2 row up to 8 tube rows
(37 to 150 mm core thickness)
fin pitch: 2.2, 2.5 and 3 mm
10 mm tube pitch
13.6 x 2.6 mm tube
19 x 2.6 mm tube

Steel

2 row up to 8 rows
(57 to 150 mm core thickness)
fin pitch: 2.2, 2.5 and 3 mm (and multiples thereof)
15.88 mm tube pitch
13.2 x 2.6 mm tube
angled tube construction

Corrugated Fin Radiators

13.6 x 2.6 mm tube
1 row up to 5 tube rows
(16 mm up to 83 mm core thickness)
fin pitch: 35 to 80fins/dm
10 mm or 11.5 mm tube pitch

11 x 1.5 mm tube
2 row up to 4 rows
(27 mm up to 57 mm)
fin pitch: 35 to 80 fins/dm
9.5 mm tube pitch