David Bolton When the Existing Keyway Stays But the Lock Gets Replaced: Cross-Keying Competitor Cylinders Into New Hardware What This Article Covers and Who It Helps When a school replaces a worn cylindrical lockset, a hospital renovates a wing, or a facilities team upgrades hardware after a breach, the last thing anyone w... cross-keying cylinders keying locksets retrofit hardware Jul 4, 2026
David Bolton Cylinder Dogging on Exit Devices: Why the Upgrade Gets Ordered Wrong Before Anyone Checks the Fire Rating What Cylinder Dogging Actually Does on a Panic Bar Cylinder dogging is a feature that lets a building operator use a standard key cylinder to hold an exit device's latch bolt in the retracted position... cylinder dogging exit devices fire-rated openings panic hardware retrofit hardware Jun 27, 2026
David Bolton Why the ADA Ramp Threshold Offset Dimension Is the Last Decision You Make at a Retrofit Opening What This Guide Covers and Who It Is For When a new building goes up, the ADA threshold spec gets locked in during design. When an existing building needs to come into compliance, the threshold offset... ADA compliance commercial door hardware retrofit hardware thresholds wheelchair accessibility Apr 23, 2026
