Material: Fir construction, Solid wood; Durable with good Ventilation; Water proofing treatment, 100% safe for small animals; 4 x access doors,  Three Internal Perches; 2x Nesting boxes Plus a easy cleaning Tray; Built-in ramp connected between floors with stair lock, Heavy Duty Metal Bolts; Zinc rear pull out tray for easy cleaning, Pre-Drilled holes for quick easy assembly with installation instructions provided. You DON'T need to be professional to build it!