Slimport circular vision panels with their clean lines enhance the appearance of any door. This slim low profile flush fitting design is available in stainless steel, or zinc plated mild steel ready for colour coating. Now practical vision requirements need not compromise aesthetics. Slimport vision frames with their unique concealed fixing design are the answer, ideal for luxury office suites, corridor doors, classrooms etc.


The fixings are around the bevel and not directly on the face – this improves the aesthetics. The flush fitting rim is ideal for ‘clean room’ situations. Fixing on one side only prevents unauthorised tampering yet, in the event of glass breakage, allows easy replacement. It also leaves the corridor side totally free from visible fixings.

  • Available in 4 sizes - 250, 350, 450, 550mm

  • Available in 4 door thicknesses - 40, 44, 50, 54mm

  • Manufactured from mild steel and stainless steel

  • Fully fire tested to suit timber doors and steel doors

  • Concealed fixing one side

  • Available as a full kit with glass and glazing tape

Slimport Sizes


The ZEROplus top selling Slimport is available to suit four different door cut-outs: 250mm, 350mm, 450mm and 550mm, with the clear vision being 50mm less in each case.

Door Thickness Options

Slimports are available to suit the four most popular door thicknesses of 40mm, 44mm, 50mm and 54mm with a tolerance either way of ±2mm. The glazing pocket is 10mm wide (±2mm in relation to the door thickness) to accommodate generally 6mm thick glass and appropriate glazing tape.


The Slimport is of a self-attaching designed meaning the supplied 25mm fixing screws simply pass through the door cut-out and fasten to the opposite side of the vision frame, eliminating the need to drill the door for through fixing bolts. This means that just a circular hole to the required diameter is all the door preparation that is required.
They are designed for flush fitting to both steel and timber doors. For fire rated timber doors, installation gets even easier as we can supply our intumescent aperture liner meaning no time consuming hardwood lipping is required.

Slimport Parts


We can supply complete kits for fire and non-fire rated doors. Available from stock we have a wide variety of glass, glazing tapes and aperture liners (timber fire doors). Please consult with us for the correct combination for your application.

Fully Fire Tested

Mild steel and stainless steel Slimport glazed vision panel systems are assessed for use on previously successfully fire tested timber based doorsets up to 60 minutes and insulated and uninsulated steel based doorsets up to 240 minutes with respect to BS EN 1634-1: 2000 and/or BS 476: Part 22: 1987.  FS9009 “ceramic type” glazing tape and FS4004 intumescent aperture liners should be used on timber doors. FS9009 “ceramic type” glazing tape should be used on steel doors.


Slimports have also been extensively tested for sound. The complete Slimport-STC set which consists of the Slimport vision frame, Sound Sealing Tape, glazing tape and glass has been included in acoustic tests up to 36dB. Various types of glass have been tested with the Slimport to give a wide range of acoustic options.

Corrosion Tested

Stainless steel Slimports have been successfully tested to Grade 4 (240 hours neutral salt spray exposure) and classified as very high resistance, in accordance with BS EN 1670:2007 Building Hardware – Corrosion Resistance.

Slimport Acoustic Circular Vision Frame
Slimport 250 Circular Metal Vision Panels
From £109.95
In stock, 224 units
Slimport 350 Circular Metal Vision Panels
Slimport 350 Circular Metal Vision Panels
From £129.95
In stock, 171 units
Slimport 450 Circular Metal Vision Panels
Slimport 450 Circular Metal Vision Panels
From £167.50
In stock, 273 units