door core types insulation heavy duty use

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Polystyrene Cores: The L-series door with polystyrene core insulation and the CE-series door have full slab polystyrene core.Polyurethane Cores: The L-series door with polyurethane core has honeyco...
Insulated Core Options: Steelcraft L-Series doors are available with the following 2 optional insulated cores: Polystyrene slab - this core is available in non fire rated and fire rated doors...
The five most common cores are honeycomb, polystyrene, polyurethane, steel stiffened, and temperature rise. Honeycomb core doors are used for interior and exterior openings where high thermal...
Door cores are available as follows: L-Series SL-Series and A14-Series Doors: Honeycomb core is standard Polystyrene core is optional Polyurethane core is optional CE-Serie...
The 4010, 4020, 4110, and 4040/4040XP are heavy duty closers.
Hold Open Closers & Magnets (Fire/Life safety products) provide a wide range of solutions.  Single or multi-point hold open closers Utilize an electromechanical closer. Hold the door o...
Polyisocyanurate foam (polyiso) is modified polyurethane foam but offers greater dimensional stability over a wider service temperature range.Polyisocyanurate foam is specifically formulated to pro...
The following hinges are available on Paladin series doors and frames: Butt hinges -  4 1/2", 5" or 6" ball bearing type either standard or heavy duty Continuous hinges - full mortise...
Levels and Models (covered in ANSI A250.8 (SDI 100) "Recommended Specifications for Standard Steel Doors and Frames") are SDI term aid in the selection and specification pr...