Glass FurnacesPGLS Series System Features ^ Upwards opening door ^ Door safety switch ^ Customized controller option ^ High-quality fiber material ^ High level temperature uniformity ^ Electrical protection PGLS series are within our standard products and used for glass fusion and pate de Verre furnaces. Custom made glass furnaces are made upon customer request. Glass Fusion Furnaces are all top heated, to achieve maximum temperature homogeneity. Observation ports are available for the user to observe the stage of fusion and act accordingly. Standard HLF series furnaces cover a range up to 1000°C/1832°F, and a volume of 500 liters. All models have a stand frame on wheels for easy moving. Gas struts are installed to enable easy lid opening. Custom made higher volumes include hydraulic lift mechanisms for easier usage. ^ Top heating ^ High quality heating elements and ceiling construction ensuring a long service life ^ Dual skin housing for low external temperatures and high inner temperature stability ^ Intuitive controller user interface ^ System operation with solid-state-relays *For system accessories please check the accessory page for furnaces. Optional Features ^ Over-temperature limiter for thermal protection ^ Option of hydraulic opening door ^ Data logger with the software ^ RS422/485 communication ^ Bottom, lid or back side heating ^ Observation port