The Internal Un-Finished Montana Oak Etna Bi-Fold Door utilizes a contemporary, veneered design that is manufactured with 1 large shaker styled recessed panel that is constructed from real oak veneers and also completed with a unfinished body that is prepared for a varnish finish. This Internal Bi-Fold Door is available in a range of sizes to suit all standard applications and is also available as a standard internal door. Etna - Montana Oak Collection The Montana collection from JB Kind is made up with a selection of traditional and contemporary doors that have a real oak veneered design, which gives the look of solid wood without the expensive cost price. This beautiful door collection is available in a range of different styles and sizes to suit all preferences and also combines modern detailing with a natural feel assuring that each door will look fantastic in any classic or modern styled home. Each Internal door is manufactured with an engineered construction with stylish real wood veneers and solid oak lippings that are pressed over the natural solid core of each door and this collection is also supplied unfinished, prepared for a varnish finish. Core Type: Engineered Glazing: N/A - Solid panelled Please Note: Size shown indicates total opening size (Doors may be slightly smaller to accommodate the included track system) Weight: 18kg Guarantee: 10 year manufacturer guarantee