All CANTY sight glasses feature the Fuseview™ window.  Our unique fused glass windows far exceed all conventional tempered glass windows in safety and performance.  By fusing glass to metal, a high pressure, high safety, hermetic seal is formed.  The fused glass technology ensures safety with every Fuseview™.  What’s more, our windows can easily be removed for cleaning.  CANTY windows do not have to be discarded as do traditional tempered glass windows.  CANTY fused glass windows can be re-used again and again.  The added heater feature of the PureViewCF™ prevents condensation from forming on the glass, allowing for a clear view at all times.