Extremely versatile, this dual sliding patio door opens from either side and is energy efficient for extreme climates. It slides easily and comes with a dual locking screen door and security lock on both doors. Maintenance-free internal blinds. Corrosion, rust and dent resistant. These mini blinds are incorporated into our factory sealed units. Once sealed these units are totally dust and maintenance free, offering a high level of control, convenience, privacy and durability while preserving the charm and clean appearance of your home's interior. Dual Sliding Patio Door. Opens, closes and locks from both sides High security design with anti-lift sash and a high security mortised handle locking system adds strength to your door Energy efficient with Low-E Argon filled glass, Intercept warm edge technology, triple weather-stripping, tempered insulated glass Multi-chamber wood reinforced frame with exterior PVC cladding. Reinforced. Corrosion resistant. Tracks and a sloped sill for superior water drainage. Smooth and silent gliding self-lubricating tandem rollers, vertical stiles reinforced. Required rough opening is 72.625" x 80.625"