| Model A | Steel | 3 hours | Automatic closing, self-latching | Inspect hinges and seals regularly |
| Model B | Aluminum | 2 hours | Corrosion-resistant, manual override | Clean tracks and check fire alarm connections |
| Model C | Fiberglass | 1.5 hours | Lightweight, energy-efficient | Inspect for cracks and ensure proper function |
| Model D | Steel | 3 hours | High impact resistance | Lubricate moving parts every 6 months |
| Model E | Composite | 2 hours | Thermal insulation, flexible design | Check seals and insulation regularly |
| Model F | Steel | 4 hours | Heavy-duty, reinforced structure | Regular inspection for structural integrity |
| Model G | Wood | 1 hour | Aesthetic appeal, sound insulation | Ensure fire retardant treatment is up to date |
| Model H | Steel | 3 hours | Quick-release mechanism, energy-efficient | Test quick-release function monthly |
| Model I | Fiberglass | 2 hours | Low maintenance, resistant to rust | Monitor surface for discoloration |
| Model J | Aluminum | 2 hours | Lightweight, weather-resistant | Regularly check for functional issues and integrity |