
It's all about production technologies, design, factory features.
Models for professional operation are much more complicated from an engineering point of view, since at the design stage by experts improved rigidity, strength, simplicity of emergency repairs, resource, the possibility of installing accessories, including:
additional supports, wall stops, horizontal stabilizers;
hooks, fasteners, fixing brackets;
stands, stands, organizers for manual, electric tools, construction accessories, paintwork, brushes, rollers;
expansion platforms for more comfortable installation at high altitude;
stabilizers of stability for work on unstable surfaces, which initially do not imply a direct horizontal plane, rigidity;
Wheels for comfortable movement between locations, rooms.

Such accessories are applicable to home models, but in a very limited quantity. Or this opportunity is not initially implied by the design for personal use (life, garden, basic technical equipment).
Special emphasis is on strength, assembly quality, frame with stiffeners. The professional design should be without failure under any conditions.
The variety of form factors
The main advantage of a professional tool is options for execution and coverage of the maximum possible number of customers. Alumet, for example, offers the following models:
Castle. Classic single -section products with enhanced aluminum frame and expanded steps;
Telescopic. An analogue of premium, but folding type. Of the compact ones, they quickly lay out in the working position, without losing in strength and stiffness. Ideal for exit installations;
Two -sectional. The combination of two sections with a hinge connective mechanism. For installation anywhere or simultaneous operation of a pair of specialists at once. Additionally, you can install the central platform that is available among accessories;
Three -sectional. An option with an additional attached construction, which increases the maximum height of the lifting of the worker;
Hinge. Universal products with two to four hinged folding points. This approach allows you to modify the model in the MA-shaped, P-shaped, L-shaped specialist. It is also easy to turn the staircase into a site, a pedestal, a platform for work under the ceiling;
Cable. The option of three -section, where the third part is attached to the basis with the help of a rope. With its help, you can independently vary the height of the rise of the mobile section.
I also want to note that professional equipment from alumin was manufactured according to strict standards of reliability, durability, safety. They are not afraid of corrosion of oxidation, deformation during prolonged dynamic loads. At the same time, light, extremely simple to use, do not jam (applies to hinges). That is why the tool fully justifies the cost.
Accent on accessories
Since professional stairs are produced according to the standards, they initially lay such parameters as safety, comfort, convenience, increased working resource. At the same time, engineers understand that a staircase or stepladder should initially help, and not complicate. That is why they lay:
enhanced aluminum profile with stiffeners;
resistance on any hard, loose surfaces;
screw, bolted joints instead of rivets;
anti -slip plugs, plastic tunes, plastic, rubber, PVC;
High resistance to twisting, sagging, deformation.
Bolts instead of rivets will quickly repair the stairs in the field, using only a improvised tool.