The Stira Heavy Duty (HD) is specifically designed for situations where the unit is going to be used regularly and where heavy items will be moved via the Stira. When considering installing the heavy duty you should consider the following.

The Wraparound hinge gives superior strength to the weakest point of any folding stairs the first fold. In other stairs this joint is not strong enough to last, eventually the screws will be pulled out of the stairs.

• Will the Stira be used more than once a week?

• Will there be employees using the Stira?

• Are heavy items going to be transported via the Stira?

• Is the Stira going to be used as a method of maintaining equipment in a loft or roof area?

If the answer to any of the above is yes, then you should consider installing a Stira HD. Like the standard stira, the Stira HD is a compact folding stairs which sits neatly on the back of the trapdoor. However, that is where the similarities end.

The Wraparound hinge clamps onto the stairs. taking the presure off the screws making the joint much stroger and safer in the long run.

For support and fitting intructions visit www.mystira.com