How is the cover of the Oman Solid Extra metal model insulated?
The cover of the Solid Extra is 46 mm thick in total and contains 40 mm of thermal insulation. The manufacturer specifies Ud 0.85 W/m²K, one peripheral seal, and white coating on both sides. These values apply specifically to the Solid Extra. They should not be replaced with the parameters of the wooden Extra or the Solid Polar just because the model names are similar.
How is the metal structure of the Solid Extra attic ladder constructed?
The Solid Extra uses a metal ladder made of three folding sections. The total width is 400 mm, the usable tread width is 361 mm, the depth is 80 mm, and the wooden box is 170 mm high. These dimensions describe the ladder and frame, while the length and width of the box are chosen separately. During installation, the size chart for the specific Shopify variant must be followed.
What are the external dimensions of the Oman Solid Extra box?
The Shopify variants of the Solid Extra come in lengths of 110, 120, 130, or 140 cm and widths of 55, 60, or 70 cm. The official catalog requires the installation opening to be 2 cm larger than the external box size. For example, a 120 x 70 cm box is installed in a 122 x 72 cm opening. Variants with a width of 55 cm do not allow railing installation.
What clearance is needed to unfold the Solid Extra?
For a box length of 110 cm, the Oman Solid Extra requires 128 cm of floor space and 161 cm of opening clearance. For lengths of 120, 130, and 140 cm, the values are 142 cm and 165 cm respectively. The maximum room height is 280 cm. Measurements are taken separately from the opening because they show the unfolding trajectory of the three metal sections.
What safety features does the Solid Extra have for loads up to 210 kg?
The Oman Solid Extra is rated for a maximum load of 210 kg and is shown with a railing and safety caps. For widths of 60 and 70 cm, the railing can be used, while for 55 cm the manufacturer excludes its installation. An additional step is noted as an available option. All these elements assume a properly secured box and a fully unfolded ladder on a stable finished floor.
How does the Solid Extra differ from the Solid Termo in the same metal series?
The Solid Extra has a 46 mm cover, 40 mm insulation, Ud 0.85 W/m²K, a 170 mm box, and a maximum load of 210 kg. The Solid Termo has a 26 mm cover, 20 mm insulation, Ud 1.22 W/m²K, a 135 mm box, and a load capacity of 190 kg. Both models use a three-section metal ladder with a width of 400 mm, but their thermal and load parameters are not interchangeable.
