Dormakaba BTS75V Bf Nho Concealed Floor Closer Size 1-4

Product Description

The DORMAKABA BTS75V BF NHO is a concealed floor-mounted door closer body designed for barrier-free, non-hold-open applications. The unit installs into the floor beneath the door, keeping the closing mechanism out of sight while meeting accessibility requirements for low opening-force compliance. It is sized for doors falling within the Size 1-4 range, making it suitable for a broad range of door weights and widths commonly found in commercial and institutional entryways. Installation and adjustment are typically performed by a licensed door hardware technician or commercial locksmith working within applicable accessibility and building code requirements.

This floor closer body is intended for commercial interior and exterior door applications where a clean, hardware-free appearance is required alongside accessible design standards. The barrier-free designation indicates the closer meets controlled closing-speed and opening-force criteria supporting compliance with accessibility guidelines. The non-hold-open configuration means the door will return to the closed position after each use without a hold-open feature engaging. Typical installation locations include corridors, restrooms, offices, and public-access entryways in commercial, institutional, and hospitality buildings.

Key Features

• Concealed floor-mount design keeps hardware hidden below the door for a clean architectural finish
• Barrier-free rated for low opening-force performance supporting accessibility compliance
• Non-hold-open configuration ensures automatic return to closed position after each use
• Size 1-4 range accommodates a wide variety of commercial door widths and weights
• Body-only unit allows pairing with compatible arms and cover plates for project-specific configurations

Compatibility

Designed as an OEM-style replacement or new-installation floor closer body for commercial doors requiring concealed barrier-free closing hardware within the Size 1-4 application range.

Installation Notes

Installation of concealed floor closers requires cutting a mortise pocket into the floor substrate and is typically performed by a qualified door hardware technician or commercial contractor. Power to any access control or electric hardware at the door opening should be isolated before beginning work. Follow the door manufacturer specifications and applicable building codes, including ANSI A156.4 for door closer performance and ADA accessibility guidelines where required. This listing is for the closer body only - verify that compatible arms, spindles, and cover plates are sourced separately before beginning installation.