44mm thick twin tray construction. Door skins manufactured from 1.5mm thick zinc coated mild steel for enhanced corrosion resistance. Door leaves infilled with light weight, impact resistant honeycomb core or mineral wool and vertical stiffeners when required. Anti-pry astragal fitted to leading edge for bolt protection. Hardware preparations suitably reinforced and pre-threaded for required fasteners.

100mm x 57mm single rebate profile supplied as standard. Double rebate profile and increased frame depth sizes available on request. Manufactured from 1.5mm thick zinc coated mild steel. Knock-down butt joint frame assembly method for ease of site installation as standard. Butt welded option available on request. Factory prepared hinge, strike plate and door closer mounting plates.

Silicone self-adhesive smoke/weather seal to frame and Approved Doc M compliant aluminium low profile threshold c/w integral seal supplied as standard. Clear threshold option and alternative aluminium or steel profile designs available on request.

Standard range of square, rectangular and round shaped vision panel designs with bevelled beading and tight mitred corner joints. Clear vision sizes (W x H): 406mm x 406mm, 406mm x 711mm, 152mm x 457mm, 152mm x 711mm or 406mm diameter. 9mm thick Firelite clear ceramic safety glass supplied as standard.

Standard range of square and rectangular shaped fire block louvre vents. Clear vent sizes (W x H): 305mm x 305mm, 457mm x 305mm, 457mm x 457mm, 305mm x 1524mm or 457mm x 1524mm. 40% free area. Vision panels and louvres may be combined within the same door leaf.

Door frames second fixed within structural openings using packing shims and expansion anchors to masonry/concrete openings or machine screws to drilled and tapped holes in steelwork. Frame fixing holes infilled with snap-fit low-profile plastic hole plugs. Frame to wall joints sealed with mastic sealant.

Certifire range tested by Warringtonfire to BS EN 1634-1 and third-party fire product certification scheme approved to 1 hour fire integrity duration. CE/UKCA marked range tested to BS EN 1634-1 by Efectis and approved to 4 hours fire integrity duration.

Thermal transmittance certified in accordance with BS EN ISO 10077-1 by Element Materials Technology. U-value for plain single and double doorsets: 3.0 W/m².K

High quality ASSA ABLOY branded hardware including Union HD72 Series mortice locks and Union/Exidor panic escape devices. Minimum of four BS EN 1935 Class 13 stainless steel ball bearing butt hinges fitted to each door leaf. Concealed flush bolts or barrel bolts to double door passive leaves. All hardware factory fitted as standard. Other ironmongery available on request.

Top coat: Architectural grade polyester powder coat. 30% gloss level. 60-80 microns thickness. Optional marine grade zinc rich primer for enhanced corrosion resistance. 60-80 microns thickness. Stocked range of 58 standard colours. Other colours and finishes available on request.