They have an NPTF (National Pipe Tapered Fuel) connection on both ends of the fitting

the counter top must be 3/4 of an inch to 1-1/2 inches in thickness and have a rough opening that measures 12-1/4 inches in width by 4-1/2 inches in height

Model 1645

They're made of metal to provide a finished appearance and resist odors and staining

this unit's safety features include a universal emergency sign

New Pig 20 in Absorbent Pad, Fluids Absorbed: Universal, Light, 26.2 gal, 200 PK - MAT188 Baby Changers They have an NPTF (NationalPIG Gray Ham O Absorbent Mat Pad in Dispenser Box conceals absorbed leaks and drips. Scuff resistant top layer stands up to foot traffic in aisles and walkways, won't rip, tear, fray, or create a trip hazard, even when saturated. Lasts 2 times longer than ordinary mats for fewer change outs. Absorbed leaks and drips blend right in. Top layer saves on product and disposal costs; absorbed grime is not visible, so you'll leave mat in place longer. Fast