⚠️ Important Note
Rough-in dimensions vary by manufacturer and model. These sheets reflect typical commercial specifications. Always verify against the manufacturer's installation drawings for the specified product before rough-in. Updated 2026.
Standard rough-in measurements for commercial floor-mount and wall-hung toilets.
Floor-Mount Toilet Rough-In Sheet
Standard 12" floor-to-drain rough-in. Includes cold water supply at 6" AFF, 7" from centerline. Closet flange height, wax ring, and bolt hole dimensions.
View Toilet Guide →Wall-Hung Toilet Carrier Sheet
In-wall carrier rough-in with waste stub-out height 16"–21" AFF range. Supply rough-in, carrier plate height, and finished floor clearance. Kohler and Sloan carrier noted.
View Toilet Guide →Wall-Hung Urinal Rough-In Sheet
Top-spud and rear-spud urinal rough-in. Supply at 54"–56" AFF standard, 15"–17" for ADA. Drain centerline, hanger height, and flush valve clearance.
View Urinal Guide →Urinal Screen & Partition Spacing
Standard 24" on-center urinal spacing, 12" screen depth, and 18" AFF bottom of screen. Includes ADA compliant urinal height guidance at 15" max rim height.
View Urinal Guide →Wall-Hung Lavatory Rough-In
Hot and cold supply at 21" AFF, 8" on-center (4-inch center also shown). Drain centerline, bracket height, trap depth, and P-trap offset. ADA rim height 34" max.
View Sink Guide →Countertop Lavatory Rough-In
Drop-in and undermount sink supply locations, drain centerline, counter cutout dimensions (standard 17"×14" oval and 16"×11" rectangle), and overflow height.
View Sink Guide →Flushometer Valve Rough-In Sheet
Top-spud and rear-spud supply heights for water closet and urinal flushometers. Sloan Royal and Regal standard rough-in. 3/4" and 1" supply line sizes noted.
View Flush Valve Guide →