Natural Convection
FRK - Heating Only
These trench heaters utilize natural convection. The temperature difference of cold + hot air generates a consistent air flow across the heat exchanger due to the air density difference. This creates a reliable transfer of heat between the space, window and heat exchanger.
Trench Heating
Humid Environments
Natural Convection
Humid Environment
FRM - Heating Only
Similar to the FRK with structural changes to the trench heater components (Casing, grille & heat exchanger). They have been modified to allow for longevity in corrosive or humid environments such as natatoriums.

24VDC
Humid Environment
FRB - Heating Only
Similar to the FRT with structural changes to the trench heater components (Fan, casing, grille & heat exchanger). They have been modified to allow for longevity in corrosive or humid environments such as natatoriums.
