The difference between these two comes down to operable panels.
Top hung sliding door vs bottom roller.
Bottom rollers are built into the frame of the door or gate and are designed to carry the entire weight of the door rolling on floor track.
Top hung sliding door systems which feature a sleek design that offers options for wall or ceiling mount for sliding glass doors with or without fixed panels.
Top hung bi folds need a strong lintel or beam overhead to bear the weight of the wall or roof above.
A bottom hung system consists of two rollers at the bottom of the door running on a track with two guides at the top running in a guide channel to keep the door stable and steady in all weather conditions.
When you go to the hardware store take the old ones with you and get a complete new set of upper and lower rollers.
Top hung sliding roller unit roller unit suspension system stainless steel top rollers utilize the highest quality roller bearings permitting quiet easy manipulation of the panels.
We carry sliding door track systems by leading manufacturers such as knape and vogt stanley hardware hafele grant beyerle and johnson hardware.
Structural condition at the head must be adequate to support the full weight of the track.
A top guide system is used to prevent the door from tipping over at the top.
Barn door hardware is used in many commercial or residential applications and designs such as industrial lofts or the modern farmhouse.
Bottom rolling doors have a lower center of gravity and don t pull down as much weight from the top of the frame.
Horizontal sliding windows are commonly referred to simply as sliding windows or slider windows.
A double hung window can open from top or bottom whereas a single hung window can only open one sash.
This style traditionally includes panels within the window that slide side to side.
This gives them a smoother operation and makes them more stable than top hung bi folds.
These top hung systems require no bottom track and the smooth sliding action allows for finger touch control.
For heavier glass door applications we have the gsdh series.
Once you have the slider out its a good idea to replace the bottom wheels as well.
Bottom rolling and top hung sliding doors.