Door lining kits and internal door frames are the inner part of the doorway that you fix your interior door in place onto. These door lining kits work alongside the Door Supplies Online collection, with numerous door accessories compatible with the frames. Prices start low, so shop from the range below to find the right internal door frames and door lining set for your home.

Frame Types & Styles

a. Rebated vs Non‑Rebated

Rebated frames have a recess so the door sits flush, common in UK homes and ideal for single or fire-rated doors
Non‑rebated frames require a stop to close against, used often in pocket doors or modern finishes.

b. Pre‑hung vs Unlined Frames

Pre‑hung frames come with the door fitted—simplifies installation.
Unlined frames fit inside the wall before the architrave and door are fitted, offering custom installation

c. Special Frames

Adjustable frames accommodate uneven walls
Fire‑rated frames have grooved intumescent strips for FD30/FD60 compliance
Pocket door frames allow hidden sliding doors

Internal door lining and frame kits

Door frames can be used not only to help with new door installation but can also bring a new lease of life to your current doorways. They can transform doorways and tie together your chosen room decor. With a variety of wooden door frames available to choose from including pine and oak door frames and many more, you’ll find the perfect door lining set for your door.

Our range of door frames isn’t just practical but our frames are great to look at too! The internal door lining is an integral part of the doorway, holding the door in its place, and creating the stable entrance you need. No matter the door size you have, we stock the internal door frames to fit. Shop the LPD door frames today or check out the XL door linings available now.

Choose the ideal door lining and door frame kit today or view the intumescent strips and pads to accompany our fire rated door frames. With unstained and stained frames to choose from, you can create the ideal vision for your room.

Buy internal door frame kits in the UK

Internal door frames are both practical and fashionable. Choosing the right frame will ensure the stability and security of your door, while also matching your chosen aesthetics with ease. All of the door framing sets available at Door Supplies Online are designed to work with all of the doors we stock, making it easy for you to get the right fit.

We offer fast delivery nationwide and a price guarantee on all of our products so you know that you are in safe hands. Secure payment options mean that you can pay in a variety of ways from credit and debit cards to PayPal and Klarna. Pay your way today.

Got questions about your delivery or about how to find the right door frame for your home? Contact the Door Supplies Online team. Our extensive experience can help you find the perfect product.

Internal Frames FAQs

A jamb, also referred to as a side or head jamb or a door jamb, is the individual pieces of a door frame. The jambs and mullions form the entirety of the frame itself, making for a secure fit in the doorway.

In essence, they both are usually in reference to the same thing. The timber perimeter that is fitted into the "hole in the wall" onto which you would then hang the door.

Door frames do not come in one specific size. Typically they are supplied with 2 long pieces (legs) and a shorter piece (head), and these are then cut down to the size of the door. This is easy to do and ensures that you get a perfect fit each and every time.

Door frames vary in cost depending on the material, finish, and make. Internal door frames typically start at less than £60 for the full kit, ensuring that you can transform the doorway without breaking the bank.

Yes, door frames can be replaced. This can be done if wear and tear have weakened the frame or if you want to give your door a new lease of life. You can buy full kits or opt to buy the various parts of the frame, such as the lining or jambs.

Yes, internal door frames can often be customized to fit specific dimensions and styles. They can be painted, stained, or finished to match the interior decor.

To measure for a new door frame, start with the width of the opening ("hole in the wall") at the top, middle, and bottom. Then, measure the height from the top of the threshold to the top of the hole too. If the old frame and architrave are still currently in place, then you can remove the architraves to give visibility of the existing frame and its thickness.

While it's possible to install a door frame on your own, it's recommended to seek professional assistance, especially if it involves structural modifications or if you're not experienced in carpentry.

Frames usually only need a periodic wipe down in order to keep them in good condition. Check for any signs of damage or wear, and address them promptly.

Yes, fire-rated door frames are available to improve fire safety in buildings. They are designed to contain and resist the spread of flames and smoke for a specified duration.

Frame Types & Styles

a. Rebated vs Non‑Rebated

b. Pre‑hung vs Unlined Frames

c. Special Frames

Internal door lining and frame kits

Buy internal door frame kits in the UK

Internal Frames FAQs

What is the difference between a door frame and a jamb?

Is there a difference between the door lining and the door frame?

How much does a door frame cost?

Can a door frame be replaced?

Can internal door frames be customized?

How do I measure a door frame for replacement?

Can I install a door frame by myself?

How do I maintain and care for a door frame?

Are there fire-rated door frames for safety purposes?