Humidifier Spares-Casana & Capri -Evap pads To be changed every 6 weeks Price: £15.28 incVAT These evaporator pads soak up the water from the base of the unit and helps the evaporation process take place. Pack of 4 pads 300x275mm. To be used with the Casana and the Capri radiator humidifiers IN STOCK NOW. FREE MAINLAND UK DELIVERY IN 2-3 WORKING DAYS.