We have a really great selection of heaters for hot tubs.
Heaters have their own codes: M-small; D-large; S-glass.
Production range with coded markings:
1. Inside heaters: 21M; 22D
2. Inside heaters with external furnace, a door with or without glass: 25M; 25MS; 26D; 26DS
3. Outside heaters, doors with or without glass: 23M; 23MS; 24D; 24DS
4. External furnace for fibreglass tube: SP.