Sealmaster, a division of Dixon International Group Limited, of Cambridge in the UK.

Certifire Certificate No CF221:
FireGlaze Compound and GL60 Liner in timber door leaves for periods of 60 minutes integrity.

The glazing beads shall be of dark red hardwood sections of minimum density 600 kg/m³, 24mm wide by 28mm high, chamfered by 20^o and fixed using No 8 wood screws 50mm long at a maximum of 150mm centres.

The apertures shall be lined with FireGlaze GL60 Liner 54mm by 2mm.

The glazing system shall be FireGlaze compound to full height of the beads by 4mm thick between the glass and the beads. Hardwood or non-combustible material setting blocks shall be used to achieve the required edge cover.

This Certificate of Approval relates to apertures of the sizes and using the glasses shown in the table below when used in conjunction with FireGlaze Compound and GL60 Liner glazing method:

Glass type	Maximum Pane dimension	Maximum Pane	Maximum Pane
	(mm) at any aspect ratio	dimension (mm) at	Area
	other than 1: 1	an aspect ratio of 1:1	(m2)
Pyroshield	824	741	0.55
Pyran S	824	741	0.55
Firelite	824	741	0.55
Pyrodur*	824	741	0.55
Pyrobelite*	824	741	0.55
Pyrostop*	824	741	0.55
Pvrobel"	824	741	0.55
* Reduce width of beads accordingly
The aspect ratio of the class may be unlimited within these pane dimensions

For this application, the following conditions shall also apply:

The doorset, including door frame and associated building hardware, should have achieved at least 60 minutes fire resistance when tested, or subsequently assessed by one of the laboratories approved by CERTIFIRE as acceptable for this purpose, to BS 476: Part 22: 1987.

If the proposed doorset is to be used in double-leaf configuration, the test or assessment evidence should be applicable to double-leaf configurations. Likewise, if the proposed doorset is to be used in the unlatched configuration, the available evidence should be applicable to unlatched doorsets.

The proposed doorset should also have included a glazed aperture or apertures of the intended size, shape, area and number.

When used to glaze CERTIFIRE approved doorsets which have smaller apertures than allowed in this certificate, the aperture sizes specified in the doorset certificate shall take precedence.

The door leaves shall consist of timber faces coupled with timber or other cellulosic cores of minimum overall leaf thickness, 54 mm.

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