
Herculite & Frameless Glass Doors
Elegant, resilient all-glass doors for lobbies, offices and retail.
Frameless "Herculite" doors are the signature look of modern lobbies, corporate offices and high-end retail: a single sheet of thick tempered glass with minimal top and bottom rails, swinging on floor-closer pivots.
RPM Glass fabricates Herculite-style doors in 1/2" and 3/4" tempered glass with polished edges, clear or low-iron glass, and rail, patch-fitting or full-channel configurations. We pair them with concealed floor closers, overhead concealed closers, ladder pulls and electrified locks for access control.
Because all-glass doors depend on precise floor closer alignment, installation matters. Our glaziers set closers level, align pivots and adjust swing so the door glides shut every time — and we service existing Herculite doors that have started to drift or slam.
What's included
- 1/2" and 3/4" tempered all-glass doors
- Low-iron ultra-clear glass option
- Floor closers and overhead concealed closers
- Patch fittings, rails and sidelites
- Ladder pulls and custom hardware finishes
- Electrified locks and access control

Frequently asked questions
What is a Herculite door?
Herculite is the industry name for a frameless tempered-glass door with small metal rails or patch fittings instead of a full frame. It gives an open, all-glass look.
Can a frameless glass door be locked?
Yes. Rail-mounted deadbolts, electric strikes and magnetic locks are all available and can be tied into your access control system.
Where we provide herculite doors
RPM Glass provides herculite & frameless glass doors throughout Worcester County and MetroWest, including:
Ready when you are
Need glass installed or repaired in Acton?
Clear pricing, a crew that shows up, and 24/7 emergency service across Central Massachusetts and MetroWest.