At Glideline, we manufacture premium aluminium internal doors and partitions exclusively for the trade. The GI34 system is our answer to the growing demand for heritage-style interior glazing—with ultra-slim sightlines, flexible design options, and the kind of refined detailing and luxury that sets your projects apart.

Whether you're working on a period-style renovation, a high-end residential fit-out, or a commercial interior with character, GI34 gives you more than a generic “steel-look” system. It’s fully made-to-order, engineered for flexibility, and supported by a trade supplier who understands how you work.

Importantly, GI34 is not a rebrand of the three well-known internal door and screening systems on the market presently. It is new, entirely different, more contemporary than classic yet still delivers the timeless look that is so popular for this style of internal doors and screens. It also supports more door types and opening styles than the usual competitor systems on the market.

Heritage Internal Doors – Character Interiors, Trade-Focused Delivery and Service

GI34 draws on the proportions and detailing of traditional steel screens, often found in Victorian, Edwardian, and industrial-era buildings. It takes inspiration from the classic steel systems from the early 20th century yet provides a more consumer-friendly contemporary twist.

Its 29mm framing and square profile give it a clean, timeless aesthetic that works in both heritage-inspired spaces and contemporary homes seeking an industrial Scandi or Hygge style.

This is a system that adds visual value, whether it’s being used in:

• As doors and screens to divide your rooms

• Internal doors to your living spaces, bedrooms and even bathrooms

• Loft conversions or warehouse apartments

• Restored period homes

• Modern new builds with architectural glazing

• Boutique commercial interiors

With GI34, you’re offering more than a door—you’re offering a design feature that fits beautifully into a wider interior scheme.

GI34 One System. Complete Flexibility.

GI34 is designed to work across virtually every type of internal door or partitioning configuration:

• Single or double hinged doors

• Pivot doors for open-plan layouts

• Sliding and pocket doors (with optional soft-close/open)

• Fixed glazed panels or full-width partitions

• Bespoke panel layouts, framed or frameless options

• New York Style Screens

• Room partitions, whether end to end or partially extending into the room

Every configuration is fabricated in-house, made to order, and matched for consistent sightlines, colour and finish. It’s ideal for installers who want complete design freedom and a high-end result with fewer compromises.

Key Features Installers Will Value and Your Customers will Love

Unlike other “heritage-style” systems, GI34 is engineered with the installer and designer in mind.

• 29mm ultra-slim framing – one of the slimmest on the market

• Up to 2.5m height for hinged, sliding or pivot doors, removing the need for toplights

• Sliding doors with family-friendly soft-close, soft-open and pneumatic pocket door mechanisms

• Integrated lock block doubles as kick plate

• Minimal components for fast installation inside the property

• Glazing options: clear, reeded, acoustic, obscure, laminated and toughened glass

And because it’s all fabricated in-house by Glideline, you get full control over the finish and layout with no guesswork or assembly issues on site.

Designed for the Heritage Aesthetic

The internal door and screen market is growing, particularly in homes where style and detail matter. With the rise in demand for character-led interiors, GI34 is a system that lets you tap into that trend—without the issues that come with timber or steel.

When we partner with you for your trade supply heritage doors and screens, we are offering you a system that is not any of the three popular ones on the market right now. This means you are not competing on identical products, many rebranded and a race to the bottom on price for the identical product.

• Slimmer dimensions

• More door options and opening types than the competition

• Simpler to configure

• Easy to install

• Compatible with period or modern interior schemes

• Zero threshold letting flooring run uninterrupted from room to room.

It's ideal for residential or commercial property and complements beams, mouldings, fireplaces, and other traditional features—helping preserve the look and feel of the space, while adding something functional and beautiful.

The Glideline Trade-Only Manufacturing and Support

At Glideline, we’re a trade supplier first and always. That means:

• No direct sales to homeowners

• No competing showroom offers

• No limited-stock or one-size-fits-all product lists

• No multiple accounts in your area

We build everything in-house, from raw material through to powder coating, with dedicated support at every stage. We’ll help with:

• CAD files and drawings

• Glass spec and panel design

• Quoting and layout advice

• Showroom access for you and your customers

• Area exclusivity (where available)

We know you need speed, reliability and flexibility—and that’s what we deliver.

Why GI34 Helps You Win Sales

• Homeowners love the look—fewer objections during quoting

• Works in modern and period homes

• Slimmer than most steel-look systems on the market

• Matches flooring, design schemes, and architectural features

• Offers more value than steel or timber alternatives

• More capable than competitor systems with more options

Partner with Glideline on Your Next Internal Glazing Project

If you’re looking for a trade supplier offering more than just another me-too internal system, GI34 is built for you. Distinctive, unique, stylish, versatile, and trade-friendly. A better product to install, and a stronger proposition to sell to your customers, because it’s not the same product they’ve seen in everyone’s showrooms.

We are here to win you more work, not compete directly with you.

We're actively seeking trade partners and showroom-based installers to help us showcase the GI34 system across the UK as well as our entire range of contemporary windows, doors, bifolding and sliding systems. Let’s talk.

Request a quote, view samples, or ask about becoming a Glideline internal door partner today.

Frequently Asked Questions

Q: Can I use the GI34 system in a listed building or heritage property?

GI34 is an internal use product and not suitable for exterior applications. If you live in a listed building with interior constraints, do check with your local authority.

Q: Is GI34 suitable for commercial interiors as well as homes?

Absolutely. It’s commonly used in offices, studios, hospitality spaces, and showrooms—anywhere you want an architectural glazing feature with practical function. It’s been proven already in both dwellings and high traffic buildings.

Q: What glass types can I use in GI34?

We support clear, reeded, frosted, acoustic, and laminated options. Most styles can be mixed across a layout if needed. This system is single glazed and safety glass comes as standard.

Q: Can GI34 be used for full-height partition walls?

Yes—it’s often used to create room dividers or floor-to-ceiling screens with integrated doors. Sightlines are maintained across all sections.

Q: Does Glideline provide installation support or training?

We do. While most experienced installers find GI34 simple to work with, we can provide technical guidance, help with configuration, and showroom training where needed.

Q: How quickly can I get a quote or place an order?

We turn quotes around quickly and manufacture in-house for faster, more reliable lead times. Just send us your dimensions and configuration—we’ll take care of the rest.