You can fix it to the wall with two screws, you don't need to punch holes in the floor, and you don't need to slot your door. The front and rear wheels protect your door panels, and the auxiliary wheels at the back are on the back wall of floor guide.
eBay
Sliding Door Hanging Rail Invisible Sliding Door Guide Rail Damping Buffer Sliding Door Track Pulley
Aliexpress UK
Rust Proof Sliding For Closet Door Roller Set Wheel Runners for Smooth Operation. Sliding Door Lock Mortise Lock Handle Recessed Handle Latch Door Lock 15.8 cm. Door Hinge Jig, Cabinet Door Installation Positioner Tool for Most Cabinet Doors.
eBay
Adjustable Sliding Floor Guide Wall Mounted For Barn Door Hardware Accessory Sliding Door Sliding
Aliexpress UK
Compact: barn door sliding floor guide is small and lightweight, this design is more space-saving. Suitable for barn sliding doors, bedroom doors, etc. Barn door sliding floor guide is suitable for a wide range of door sizes.
eBay
1pcs Sliding Barn Door Bottom Floor Guide Clips Adjustable Sliding Door Floor Guide Universal Door
Aliexpress UK
Stylish : The floor guide rail of the barn door is made of durable aluminum alloy with black spray painting, creating a secure and stylish look for your sliding closet door. Secure Stylish: The practical of this barn door floor guide ensures a secure and stylish solution for guiding your sliding closet door, bringing both functionality and style to your space.
eBay
LWZH Adjustable Sliding Floor Guide Rail Stopper Black Wall Door Bottom Guide For For Sliding Barn
Aliexpress UK
The front and rear wheels protect your door panels, and the auxiliary wheels at the back are on the back wall of floor guide. This can reduce the distance from the door panel to the wall and make your door panel fit the wall as much as possible to achieve a beautiful effect.
eBay
Pocket Door Embedded Sliding Door Sliding Door Sliding Door Side-mounted Invisible Pull Handle Door
Aliexpress UK
4x Barn Door Guides. Provides silent and effortless sliding, will not disturb you and your family. Fully adjustable floor guides that can be used with most door thickness. - The Compatibility Is Just For Reference.
eBay
CCJH-Sliding Door Pulley, Hardware Accessories are Suitable for the Floor Guide Rail of Sliding Door
Aliexpress UK
Cordless Ratchet Wrench for Makita 18V Battery, 3/8" Electric Ratchet Set 55Nm. EMS Muscle Stimulator, ABS Trainer Muscle Electric Abdominal Toner for Abdominal. For Sur-Ron Surron Motorcycles Electronic Throttle Handle Throttle Handlebar Hot.
eBay
Gifsin Chrome Plated Floor Guide Sliding Barn Door Floor Guide Roller Bottom Lay-Flat
Aliexpress UK
Single Cylinder Deadbolt, Round Deadbolt Lock with Keys, Modern Door Locks New. Floor Guide Adjustable for Sliding Barn Door Bottom Roller Guide Wall Mount New. Barn Door Lock 90 Degree Luminous Sliding Door Latch Lock Heavy Duty Zinc Black.
eBay
Heavy Duty Floor Guide Flush Bottom Design Sliding Barn Door Floor Guide with Adjustable Roller Wall
Aliexpress UK