Liner device for a furnace

A liner device, adapted to be mounted between a burner box and a tube interface plate of a furnace, the liner device comprising:

• a base section, including a shielding layer formed from a first flexible mesh of flame-resistant fibers, the shielding layer defining a first surface that is configured to face the burner box, a second surface opposite to the first surface, and a medial region with a through-hole forming a passageway through the shielding layer;
• a tube section, consisting essentially of a second flexible mesh of flame-resistant fibers formed into a tubular shape that defines an internal channel around a nominal axis, a proximal end of the tube section being positioned at the base section, such that the channel opens into the through-hole and that the tube section projects from the second surface and in a direction faced by the second surface;
• an angle fastener, having a base portion that is positioned along and fixed to the second surface of the shielding layer, and having a leg portion that projects towards the second direction and is positioned along and fixed to an outer surface of the tube section at or near the proximal end thereof,
• wherein the base portion of the angle fastener is an integral part of an attachment layer that covers the second surface of the shielding layer along at least the medial region, the attachment layer including a cutout having a shape that is circumscribed by the periphery of the through-hole, said cutout extending locally and radially inwards to define a tab that forms the leg portion when flexed towards the second direction.