Air curtain
Invisidor DOORFLOW Biddle

Air curtains are acknowledged to enhance comfort conditions in the entrance environment. However with routine maintenance procedures, such as cleaning filters, often ignored a drop-off in performance and an increase in noise all too often results.

With this in mind the Invisidor DOORFLOW has been carefully developed to minimise maintenance. A purpose designed coil/heater battery reduces the build-up of dust and debris between the coil fins to such an extent that filters are no longer necessary. Having no filters means the Invisidor DOORFLOW doesn’t just offer minimal maintenance but also provides a continuous and consistent long lasting level of performance.

Available in a variety of paint finishes, Invisidor DOORFLOW has a minimalist style, being designed to look good in all types of entrance environment – from fashionable boutiques to schools and colleges. And because it is modular in nature any number of units can be joined together to create one seamless air curtain covering any door width.

As with all air curtains from Biddle the Invisidor DOORFLOW uses Biddle’s proven, patented rectifier to supply conditioned air at low speed with minimum turbulence, ensuring the air stream reaches the floor and doesn’t escape to the outside. Comfort within the entrance area is therefore enhanced without any energy wastage.