I have been shopping all accessories for my custom build BBQ island which the cost of sliding trash can under the counter doesn't seem worth it.  It typically costs at least $450~$1000 for a metal door with built-in sliding trash can. I found lots of great review on Amazon but better price here in Wayfair plus great service with no questions ask. It fit perfectly inside for my metal access door under my BBQ island sink which gives 20" height clearance.  Seriously~Save me lots of money!! plus great solid quality.  But, the access door under my BBQ grill is shorter so it doesn't fit.  Therefore, be sure to measure your height clearance. 

Pros: Fits many different applicatons