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PLUSDOOR
A door is a natural yet essential space that connects one room to another. With the expert intuition and refined perspective of PLUSDOOR, we transform your everyday moments into extraordinary spaces.
Useful Information
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Purchase Guide: High-Performance Insulated Entrance Doors
Building a new home? Or planning a renovation? We provide essential insights and useful information you need to know before building your home.
Purchase Guide: High-Performance Insulated Entrance Doors + -

Folding Door Buying Guide
Are you looking for the perfect door for your new commercial space? Or do you wish to upgrade your existing storefront with a more efficient solution? A commercial entrance is the most critical touchpoint between a business and its customers.
Folding Door Buying Guide + -

Interior Door Solutions
Are you looking for an interior entry door for your home or apartment? Or do you need a sophisticated partition door for your commercial space? We provide essential information on interior door installation, covering thermal efficiency, soundproofing, and safety.
Interior Door Solutions +
Purchase Guide: High-Performance Insulated Entrance Doors

Building a home?
- Five Basic Principles of Insulated Entrance Doors
Here are 5 fundamental principles to check when building a new home or planning a renovation.
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1. U-value
Our proprietary brand's Loy Series features a U-value of 0.65 (equivalent to premium windows), an exceptional insulated entrance door that meets the stringent standards of Passive House design.
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2. Air Tightness
Air tightness must comply with the standard of Q(100pa) ≤ 2.25 ㎥/mh.
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3. Durability
It must be highly durable and structurally sound.
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4. Stability
It must remain free from deformation during use.
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5. Usability
Operation must be intuitive and seamless to ensure a frictionless user experience.
| Regional Standards | ||
|---|---|---|
| Region | Standards | Included Regions |
| Central Region 1 |
1.3 or less |
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| Central Region 2 |
1.5 or less |
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| Southern Region |
1.8 or less |
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| Jeju-do | 2.2 or less |
|
Folding Door Buying Guide

Are you upgrading the doors for your commercial space?
A folding door is a versatile system that can be opened or closed at any time to suit your environment, perfectly balancing practicality and aesthetics. Its modern design creates an expansive atmosphere, making apartment living rooms feel like an extension of the balcony. With its sophisticated and clean look, it seamlessly integrates into any interior design concept.
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Practicality · Aesthetics · Sophistication · Minimalism
Combining practicality with aesthetics, we deliver a sophisticated atmosphere tailored for modern interiors.
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Seamlessly integrates with any interior design concept
It seamlessly blends into any space, transcending the limits of diverse environments and design styles.
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Increased interior visibility boosts the store's customer attraction
Offering a sense of openness that rival traditional show windows, it captivates the attention of potential customers.
Folding Doors for Commercial Spaces
For commercial spaces, folding doors offer exceptional insulation, windproofing, and soundproofing, while their superior openness is perfect for highlighting interior design. By capturing the attention of potential customers, these doors function as an integrated show window, effectively boosting consumer purchasing power for many businesses.
Interior Door Solutions

Do you need a interior door?
Acting as a vital barrier between the entrance and your living space, an interior door can reduce thermal loss by up to 50% (average 30%), significantly lowering your heating and cooling costs.
Our interior doors effectively block external pollutants, noise, odors, and moisture, creating a healthy and safe environment especially for households with infants. Beyond protection, they ensure privacy by minimizing the exposure of your living space to visitors.
At PLUSDOOR's interior door, we go beyond mere functional separation. Our doors are designed to elevate your interior, adding a touch of sophistication and luxury to your home.
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Reduced energy costs
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Blocking External Pollutants
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Noise Reduction
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Blocking Entrance Odors and Moisture
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Privacy Protection
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Safe Environment for Childcare
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Aesthetic Enhancement