What is a Bathroom Cylinder with One Side Knob and One Side Coin slot?

A Bathroom Cylinder features an internal thumbturn knob for effortless keyless locking from inside the bathroom and an external emergency coin/screwdriver slot. If an elderly person or child gets locked inside accidentally, the door can be safely unlocked from the outside using a simple coin without breaking the lock or damaging the door.

Can Agrawal Glass House provide custom Master Key solutions in Darbhanga?

Yes. We engineer customized Master Key and Keyed-Alike solutions for hotels, hospitals, multi-storey residential villas, and commercial complexes across Darbhanga, Madhubani, and Samastipur. Each room has an individual key, while designated master keys can open all or selected zones.

Which brand of mortise locks do you authorize and stock in Darbhanga?

We are direct authorized dealers for Dorset, India's foremost architectural hardware and security brand, ensuring 100% authentic factory products, solid forged brass deadbolts, anti-pick computer dimple keys, and up to 5-year manufacturer warranties.

What finishes and handle types are available for mortise locks?

We stock over 100+ live mounted models in Plate Handles (full-length backplates) and Rose Handles (minimalist round/square rosettes) across Antique Brass, Rose Gold, Matte Black, Satin Nickel, and PVD Titanium Gold finishes.

Dorset Mortise Locks Dealer in Darbhanga | Agrawal Glass House

Name: Agrawal Glass House
Address: Tower Chowk, Lalbagh, Darbhanga, Bihar, 846004, IN
Telephone: +91 7779925444
Price range: ₹₹

Live Showroom Lock Gallery

North Bihar's Largest Live Display of Dorset Mortise Locks & Architectural Hardware

Discover the ultimate fusion of architectural elegance and certified mechanical security. In Darbhanga, we showcase over 100+ live mounted models of Dorset plate handles, minimalist round/square rose levers, bathroom safety cylinders, and custom master key solutions in Antique Brass, Rose Gold, Matte Black, Satin Nickel, and PVD finishes.

Computer Dimple Key Cylinders

Anti-Pick & Anti-Drill Brass Body

Bathroom Safety Knob/Coin Cylinders

Custom Master Key Solutions

Inquire Mortise Lock Quote on WhatsApp Call: +91 7779925444

Dorset Mortise Handles Showroom Display in Darbhanga

Lock Architecture

Mortise Handle Types & Security Cylinders

Plate Handles (Long Backplate)

Classic full-length solid escutcheon backplates in Antique Brass, Matte Black, Satin Nickel, and Rose Gold for wooden doors.

Round & Square Rose Levers

Ultra-modern minimalist European levers with independent keyhole, euro-profile, or thumbturn rosette covers.

Bathroom Cylinder – One Side Knob, One Side Coin for Bathroom Safety

Engineered for bathroom & restroom safety: inside thumbturn knob for effortless locking, and outside emergency coin slot to unlock during medical emergencies or accidental child lockouts.

Master Key – Specially Designed Custom Key Solutions for Special Projects

Tailor-made hierarchical key systems for hotels, hospitals, schools, and multi-door luxury bungalows. Individual keys operate private rooms while a single Master Key accesses all authorized doors.

Technical Matrix

Dorset Mortise Lock Specifications

Parameter	Standard Range / Options	Recommended Application
Lock Body Backset	45mm, 50mm, 60mm Heavy-Duty Brass Latches	Main Entrance & Internal Wooden Flush Doors
Cylinder Lengths	60mm (30/30), 70mm (35/35), 80mm (40/40), 90mm	Door thickness from 30mm to 55mm
Bathroom Safety Cylinder	One Side Thumbturn Knob, One Side Emergency Coin Release	Restrooms, Powder Rooms, Kids & Elderly Bathrooms
Master Key Systems	Keyed-Alike, Grand Master Key, Sub-Master Groupings	Hotels, Hospitals, Commercial Offices & Luxury Residences
Available Finishes	Antique Brass (AB), Matte Black (MB), Satin Nickel (SN), Rose Gold (RG), PVD Gold	Modern Minimalist & Classical Luxury Interiors

Frequently Asked Questions

Mortise Locks & Security FAQs in Darbhanga

Standard double key cylinders in bathrooms risk dangerous lockout situations if someone faints or if a small child accidentally turns the key. The Bathroom Cylinder (One Side Knob, One Side Coin) provides instant privacy from inside with a smooth turn knob, while from the outside, any flat coin or screwdriver can gently turn the slot to open the door during an emergency without breaking the hardware.

A Custom Master Key System allows multiple individual locks (e.g., 20 bedroom doors in a hotel or 8 rooms in a bungalow) to operate with their own unique private keys, while a designated Master Key held by the homeowner or hotel manager can unlock all of them. This eliminates the need to carry bulky keychains.

Yes! Our showroom at Tower Chowk, Lalbagh, Darbhanga features North Bihar's largest live operational display of over 100+ mounted Dorset handles, deadbolts, and cylinders so you can test the latch action, weight, and finishes before buying.

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