MDF Flush - Steel x 2 Insert EPS Solid Polystyrene Core Interior - Superior Doors Steel x1 is suitable for most standard door sizes (height up to 1980 mm and width up to 810 mm). Steel x2 is strongly recommended for larger doors (wider than 810 mm or taller than 1980 mm) to ensure strength, stability, and durability. π Size Recommendation Table Door Height (mm) Door Width (mm) Recommended Specification β€ 1980 β€ 810 Steel x1 β€ 1980 > 810 Steel x2 > 1980 Any width Steel x2 Door Product: Steel Insert High Density EPS Solid Core Polystyrene. Superior Doors have raised the bar again, making their range of doors even more superior with the introduction of doors containing steel inserts. Steel insert doors are particularly suitable for use in areas where the ambient temperatures or conditions vary on each side of the door. Classic examples would be where the interior doors are used in an ensuite bathroom where there will be moist conditions on one side and dry conditions on the other side or another example could be the internal doors between the garage and the house where one face of the door is in a cooler area than the other face which is in a warmer area. Each side of the internal door sustains different environmental conditions. Features: Base material from New Zealand steel. G250 grade material (NZ steel specification) 100 percent NZ Made EPS Core: High Density Solid Core Polystyrene Up to 98% Glue Contact area Will not delaminate after impact Enhanced thermal qualities Steel Insert: Custom designed and precision engineered Anti corrosive pre galvanised steel Specifications & Sizes (Sizes will vary from branch to branch) Standard Heights: 1980 mm / 2200mm Standard Widths: 610 / 660 / 710 / 760 / 810 / 860 / 910mm
