The breakdown of the differences between the AB442, AB442EXT, AB442T, and AB443 based on available product data and standard suffix conventions. AB442 A high‑dome floor-mounted stop made of solid cast brass. Designed for doors with thresholds or undercut doors. Comes with wood screw (WS) and plastic anchor. Height: 1‑1/2″, Base: 1/2″ × 1‑7/8″. AB442EXP Exterior Pack screw packs; stainless steel plated to match — use EXP suffix (AB442 × EXP) when ordering. AB442T The AB442T is supplied with Torx tamper‑resistant fasteners, typically for security‑sensitive applications. AB443 The AB443 is closely related to the AB442 but differs in height and includes fasteners: Also, a cast‑brass high‑dome stop for threshold/undercut doors. Slightly shorter dome: Height = 1‑5/16″ (vs 1‑1/2″ on 442). Includes both WS (wood screw) and MS (machine screw) fasteners. Same 1‑7/8″ base diameter.
Key Features
- AB442EXP - comes with an exterior Mounting Pack
- AB442T - comes with Torx Screws
- For doors with thresholds
Technical Specifications
| Material | Base Solid cast metal, Bumper Rubber |
| Finishes | US3, US4, US10, US10B, US15, US26, US26D, US32, Custom Finishes Available |
| Base Diameter | 1-7/8" |
| Base Height | 1/2" |
| Height | 1-1/2" |
| Fasteners | #12 x 1-1/2" FH WS, plastic anchor |
Documents & Spec Sheets
Cut Sheets
Product Selection Tools
- Cross Reference 2025 (PDF)
Forms