Iva Futon October 18th, 2017 - 13:20:44
A bi-fold futon bed folds the mattress in half whereas a tri-fold futon bed folds the mattress into thirds. This means that a tri-fold futon bed mattress isnt as thick or as supportive as a bi-fold futon bed. Therefore, if youre going to be using your futon a lot for sleeping on, then a bi-fold futon bed mattress is a better choice. A futon bed mattress can be defined with the following qualities: weight, firmness, rigidity, and flexibility.
It says something about how much the manufacturer stands behind the product. Black metal frames are made overseas. Expect to wait for a part if something breaks or if youre past that 90 day warranty, expect to pay for all replacement parts and associated costs to get your frame up and running again. Consider too that parts may also no longer be available should something break. Metal bars allow mattresses to slide into and through the gaps between each bar.
Early designs involved a steel tooth design that would fit into pocket welds on the arms. These would snap off over use. The alternative design was to run a bolt through the arms and into the rails. While better it still did not address the issue of bending stretcher rails. Bent hinges also added another issue that would happen from use over time. While not as common as the other problems this issue still led to the failure of many black metal frames.
The other issue with the hollow bars is that if enough weight was placed on a spot they would begin to bend. The issue became so bad that a 90 day warranty was put in place by most manufacturers of these frames. Another issue the black metal frames suffered from were bending stretcher bars or rails. Again the hollow nature of these strecther rails presented issues with breakage and bending.