Which door is most economical L series or SL series?

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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 L-Series doors are designed for virtually all construction requirements in commercial building applications. They have also been tested and approved for uniform wind load per ASTM E330.  ...
Maximum nominal (overall) single door sizes are as follows: L-Series (Laminated Door) 20 Gage = 3’ 0” wide X  8’ 0” high 18 Gage = 4’ 0” wide X 10’ 0” high 16 Gage = 4’ 0” wide X 10...
These references are from an old and outdated SDI 100 specification. The new specification SDI 100 ANSI A-250.8 does not contain letter designations for core material. Core constructions designat...
Yes. Multiple glass lights are available on specific door series as  a special option as noted below: L-Series and SL-Series: Core options - Standard honeycomb, polystyrene, polyurethane Lig...