Bifold Doors Information

Building the future


The ability to create an elegant and expansive living space by joining the indoors with the outdoors, make 75 series aluminum Bifold Doors And Windows so special and desirable. Designed to effortlessly stack and fold against the side walls, these bifold doors and windows provide an unobstructed view from corner to corner, opening your home to infinite vastness. Most importantly bifold doors can replace walls that enlarge your patio and even kitchen view and give you the ultimate indoor-outdoor lifestyle. It allows fresh air and natural light into any space that of course fits the requirements. Besides bifold doors and windows consist of single or multiple glass panels that fold back and are easy to open and close.

Your Benefits


Free shipping nationwide directly to your door step at no additional cost. It’s on us!


Our door glass has an U-Factor of 0.29 and SHGC is 0.23 which meets the title 24 regulations.


Our prices are competitive and more affordable than other suppliers. Go take a look!


Our doors come with a multi-point locking system for maximum savety and security.


Smart design that is easy to install. Installation guide included!

ifold Door Details

Bifold Door Features And Safety

Security Features

Eris bifold doors will come with a multi-point locking system and has a cylinder lock. As a matter of fact, this kind of lock is a cylinder that runs through the center of the lock and into the door, therefore inside the cylinder is a pin-and-tumbler mechanism that can only be manipulated with the correctly shaped key. Without the right key, the pins won’t move and enable the lock to turn.

Our bifold doors come with 6-point lock and 8-point lock depends on size of door and panels.

Twinpoint Locks – This is possibly the most common and attractive locking system for bi-folding doors. In additon, it is built around a handle at the center of your doors that will operate locks at the top and bottom, holding the doors in place when engaged.

Dropbolts – These are typical dropbolt locks that are affixed to the top and bottom of your doors and will add an extra layer of protection. However, We do not recommend relying on them as your only source of security.

Deadbolts – These will most likely be the system installed with your bi-folding doors as standard and, in the vast majority of cases, is more than satisfactory. They can be controlled either with a key or with an internal, twisting locking mechanism



U-Factor and Solar Heat Gain Coefficient


Title 24, part 6, of the California Code of Regulations, sets energy efficiency standards for residential and non-residential buildings. If you’re building a new home, you should consider buying the most energy-efficient doors possible. When selecting doors for energy efficiency, it’s important to first consider their energy performance rating in relation to the local climate.

Look for a low SHGC in a climate that mainly requires cooling and a high SHGC in a climate that requires heating. The range is from 0 to 1. SHGC measures how well a product keeps out solar heat. Look for a low U-factor; the range is from 0.00-2.00. The lower the U-factor, the better the door keeps in heat.

The newly updated California code for residential fenestration requires U-factor ratings of 0.30 or better and Solar Heat Gain Coefficient (SHGC) ratings of 0.23 or better.


Benefits of Argon Gas in Bifold Doors And Windows


Almost all thermal windows today use some type of gas fill, so the benefits of argon are similar for most new thermal windows.

– Improves U-value, the measure of a window’s thermal performance; similar to the R-value of wall insulation

– Enhances soundproofing characteristics

– Minimizes heat exchange through the window

– Reduces the possibility of condensation and frost

– Can be used in all climates

– Can be combined with low-E coatings for optimal window performance

– Available in residential and commercial window sizes and styles

– Does not corrode window material as oxygen will

– Does not contaminate the environment; non-toxic gas

Glass Options

Take a look at our glass options for bildfold doors and windows.


Double tempered glass filled with argon gas


Laminated filtered glass with argon gas

E Glass – 100% block UV (Type A & B) filled with argon gas

Tinted tempered glass filled with argon gas

Safety tempered glass filled with argon gas

Argon Filled Glass For Bifold Doors And Windows

Bifold Door Features

Take a look at our bifold doors and windows product features and details.

Average lifespan is 40 years.

Aluminum frames have a scratch-free coating.

Moisture resistant and will not rust.

Small installation space required.

Hidden stainless steel multi-point lock

Creates more space both inside and in the patio.

75 series thermal break aluminum

Heavy duty hardware for smooth operation

All Eris bifold doors are bottom-hung system

Bifold doors is available in multi panel configuration

Low Track Frame For Bifold Door

Low Bottom Track Frame


3/4″ height flush with flooring

High Track Frame For Bifold Door



2 3/8″ height for extra waterproofing

Bifold Door Top Tracker

Top Tracker


Selection of MLSA hardware accessories, made of stainless steel, and the bottom of the sliding system bearing capacity can handle over 330lb weight which makes sliding fast, easy, and no noise.

Bifold Door Bottom Tracker

Bottom Tracker


Equipped with anti-swing device, ensure that the door is not shaking before and after, which in this case will run more smoothly.

Bifold Door Hinches

Door Hinges


Heavy duty hinges made of stainless steel which can handle up to 350 lb load.

Bifold Door Hinch On Bifold Door



Bifold Door Handle

Door Single Cylinder Handleset & Single Handle


Single Cylinder handlesets are locked/unlocked with a key from the exterior and locked/unlocked from the inside of the home with a thumbturn.

Call Us For A Free Quote!



From Eris Customers

Eris Home Products is a great company to do business with. Their products are very well made and at very good price. I bought a 12 feet aluminum sliding door and a front steel door and so happy with them both. But most importantly, Andy was incredibly helpful, friendly and very knowledgeable with all the products we needed. He also went above and beyond to ensure that are doors were delivered in a timely manner. I will continue and highly recommend this company to anyone looking for home improvement products. Thank you again Andy!

Angelo Bosio


Customer service is absolutely amazing. The doors are solid and look so good. Sturdy aluminum at a great price. Better than what I have seen for vinyl. Choose Eris 100% !

Mark Maritz


I can’t say enough good things our experience with Eris Home Products and working directly with Andy. From the start, Andy provided amazing customer service and made sure every detail of our order was perfect. The bi-folding doors and windows were delivered with no issues and are amazing quality. They are a total game-changer for our outdoor patio! We have gotten so many compliments since we installed them and have friends that are interested in ordering them as well. I’m so glad we found Eris Home Products so that we could make this outdoor space a reality at a much more affordable cost! Will definitely be ordering from them in the future.
Gabrielle Fornace


I love everything about these doors, from the design, to the durability, the high quality. You won’t want to go anywhere else. Worth every penny and it will last you a lifetime! I highly recommend!

Nellie Christine


Call or message us with any questions you have! We are happy to help!