The Lo-FP range of portholes is available in three diameters: Lo-FP-12 suits a 305mm diameter cut-out in the door, Lo-FP-18 suits a 457mm diameter cut-out and Lo-FP-24 suits a 610mm diameter cut-out. All three sizes are easy to install and provide a low profile, "flush to the door look". Sheet metal screws pass through the door cut-out, and fasten to the opposite side of the vision frame, thus eliminating the need to drill the door for through bolts and saving installation time and labour. It also leaves the corridor side of the frame free of fasteners for added security and a cleaner, more aesthetic appearance.
DOOR & GLASS THICKNESS Lo-FP is now available in two profiles to suit standard 6mm glass (Profiles AA1), and 22-25mm double glazed units (profiles BB1) on standard 44mm thick doors. Using one A profile and one B profile (profiles AB1) suits 16mm glass on 44mm thick doors, and 7mm glass on 35mm thick doors. Unlike the Slimport designs (on pages 88-91) which fix through the bevel and have two different halves, Lo-FP portholes consist of two similar halves which fix through the flat face of the porthole. This means the glazing pocket will increase in direct proportion to the door thickness. The simplest way to think about it is that if you add or deduct 10mm to the door thickness, you also add or deduct 10mm to the glazing pocket. All that will be required is longer or shorter screws for fixing purposes.
AESTHETICS Smooth round contour of low profile frame style gives a unique design to any setting.
FIRE TESTING Fire tested to 4 hours on steel doors and 1 hour on timber doors when used with Zero FS2002 intumescent glazing tape and FS4004 aperture liner (on timber doors) with suitable glass shown on page 95. FS9009 "ceramic type" tape also suitable for use on fire rated steel doors.
