The side stringers and steps are deeper We use 5mm thick steel hinges at the folds and double springs to carry the added weight of the stairs.
The Heavy Duty Stira is one of the strongest attic stairs available on the market and is designed for use in offices or workshops, where the stairs would be used on a very regular bases to carry heavy objects into the attic storage space. It's deep steps and handrails make it safer and easier for employees to use.
- Heavy Duty Stira tested up to 450lbs
- Side stringers; 4" deep by 1 and ⅛ (100 x 28mm)
- Steps; 5" deep (130mm)
- the extra dept of the steps gives the added comfort and strength that is need in commercial applications.
- Handrails as standard.
All heavy duty Stira are made to order so you the customer can request one that suits your needs.
We have selected a few popular sizes that are available to buy through our online shop however you can use the custom form to request different dimensions that are not listed.
These stairs built to order so still require the standard lead time