Strip heaters are used principally for convection-type air heating and clamp-on installations. When selecting strip heaters for either, two important factors must be considered: The proper sheath material for resisting any rusting and oxidizing inherent in the process or environment and for withstanding the sheath temperature required. Standard sheath materials are rust resisting iron, chrome steel and Incoloy NS Series only. Stainless steel and Monel sheaths are available at an additional charge.
Close-up of a traditional, intricate Georgian cornice moulding: decades of paint and wear and tear can take their toll. The Italians, who love getting creative with plasterwork, first used ceiling cornice in the 16th century as a decorative way to cover up the joint between the ceiling and walls. The Georgians favoured simpler lines and cleaner relief but later the Victorians loved a bit of swag and introduced all kinds of elaborate patterns from egg and darts, bead and reel, rambling roses, grapevines, fruits and ivy leave. The Georgians toned things down, favouring simpler lines and cleaner relief, while early 20th-century designers favoured defined forms with chevron and zigzag patterns.