Cast Stone Fireplace Mantel - Sebastian 42 Inch

Cast Stone Fireplace Mantel - Sebastian 42 Inch Fiberglass and concrete fireplace mantel Precast fireplace mantel for 42 inch wide fireplaces Dimensions for your Sebastian 42 inch cast stone fireplace mantel
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Brand: CJs Custom Shop
Model # FSL-GRP-42SEBT
Item # 14499
Reward Points Earned: 1188
Availability: Available
Starting At: $1,188.00
Price in Rewards Points: 118800

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2 -3 week lead time
Requires at least 2 people to install

Add a touch of historic charm to your home with the 42" Sebastian fireplace mantel. The pre-cast fabrication exudes the look of fine cut stone, making it a viable competitor to granite and marble renditions! The statuesque pillars (legs) display a crown molding style header and mantel shelf, while the complimenting hearth stone welcomes you around the warmth of the fireplace. The Sebastian brings a classic architectural motif to any room with its beautiful definition. 

Want to know the secret to the perfect look we achieve with these pre-cast mantels? We simply take a mold that has been made from a wood model and pour a lightweight gypsum and fiberglass reinforced concrete mixture into it. The result is sturdy products with crisp, clean lines.

These gypsum products have a natural white finish and are shipped unprimed. Once you receive your vintage-style mantel, you can customize it with your choice of paint or other faux finish to match your décor. Please remember that CJ's Hearth & Home loves getting pictures from our satisfied customers once their mantels projects are complete!

IMPORTANT: The 42" Sebastian mantel arrives unassembled in 5 pieces (hearthstone, two legs, header, and mantel shelf). It is heavy and will require a couple of people to set up. This is a project that will take you a few hours to install. Allow at least 48 hours for the construction materials (thin set, adhesive, and grout) to dry, and an additional 2-3 weeks for materials to fully cure before you attempt to paint your Sebastian fireplace mantel. Please watch our very informative and easy to understand video on the right side of this page!

**Please note** Items in the photo (George Washington painting, fireplace, fireplace door) are not included with this product. The 42" Sebastian fireplace mantel includes the hearth stone, two legs, header, and mantel shelf ONLY.


  • Made of pre-cast stone - a gypsum and fiberglass reinforced concrete that comes in a natural white finish. Can easily be painted or faux finished.

Features and Benefits

  • Cast stone mantels save you money over hand carved from granite or marble options.
  • Because we use lightweight gypsum and fiberglass reinforced concrete in our pouring methods, our mantels are lighter than regular concrete, granite, or marble.
  • Cast stone mantels come unassembled and primed for painting, allowing you to customize your mantel to fit the décor of your home perfectly!
  • Mantel comes with the hearth (the bottom slab in front of the fireplace) and matches the mantel shelf!


Mantel Width:   71 1/4 Inches
Mantel Height:   51 Inches
Mantel Depth:   8 Inches
Opening Width:   42 Inches
Opening Height:   36 Inches
Leg Width:    11 Inches
Leg Height:    36 Inches
Hearth Width:    75 Inches
Hearth Height:   3 Inches
Hearth Depth:   20 Inches

WARNING: We do not recommend the use of the stone mantels with vent free fireplaces or with vented, heat-circulating units that do not have a blower system to direct heat away from the face of the fireplace. Excessive heat may cause hairline cracking.

Click the link to learn How to Measure My Mantel

Click the link to learn How to Install My Mantel


The product is warranted for one year against defects in workmanship and material. The warranty does not cover transit or installation damages. This item is custom made to order and cannot be returned.

Mantel Made To Order
Estimated Production Time 2-3 Weeks plus extra time in transit.

This product must ship LTL freight and a signature is required for delivery.
Please be sure to inspect the all freight shipments carefully and note any damages or missing items on the delivery receipt.
In the event of possible concealed damage, customers MUST write "Pending Inspection" next to their signature on the delivery receipt. Failure to write "Pending Inspection" on the delivery receipt will bar the customer from recovery for undiscovered/concealed damage, after the fact.
All deliveries will be common carrier "Curbside Delivery"
"Curbside Delivery" provides delivery made to curb at the end of the driveway. It is not the driver  s responsibility to bring freight into house, garage, etc. Drivers do not assist with unpacking, set-up or clean up.

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* Last updated on February 17th 2017.
* Product, parts, color, finish, or texture may vary slightly from photos.
Customer Feedback  Our customers rate us 5/5 stars.

Our loyal customers have left 59 company testimonials giving us an average of 5/5 stars for great service. Would you like to leave your own feedback, testimonial, or review? Leave My Feedback

I called and spoke to a young lady that walked me through the order placement process. My glass came in quickly fit perfect very well pleased. I will definitely recommend you to my friends.

Lula c rated our company service 5/5 Lula c

Hello, I got your glass today and installed it.  I was impressed in how easy it was to put the plugs in that hold the glass in place – nice engineering there. I bought the wrong color – see the attached picture (the new pane is 2nd from left) – it should be lighter.  I’ll replace it sometime before I move out; in the mean time it’s a warning to not leave the fire unattended. Thanks for the great packaging, too – I can use that cardboard in projects so it’s going to be reused.

Mike B rated our company service 5/5 Mike B

Wish I would have found you sooner
Thanks for the help - I had stalled for years in doing this without a local company - this on-line process worked very well - clear directions and followup to questions and good suggestions. Thanks!

George rated our company service 5/5 George

Wow, fast turn around on my order.

Judy D rated our company service 5/5 Judy D

Replacing the glass was a breeze
This is my first time doing business with, and I am impressed with their customer care, they actually care!!!!. I have talked to Kimberly in person twice and communicated via email more than a couple of times in regards to getting a replacement glass for my fire-place glass bi-fold doors. Actually the glass procurement was the fast and easy part, and it came fast with accurate dimensions finished with a pencil edge that matched the other glass panels perfectly. The challenge after receiving the replacement glass was to find the proper gasket to replace the old used gaskets. Kimberly is very knowledgeable and has solutions for unique problem jobs like mine turned out to be.

Rusty rated our company service 5/5 Rusty

About CJ's Home Decor & Fireplaces LLC Thanks for Shopping CJ's!
Fire, Water, Paradise Experts Since 1999!
PH: (888) 986-1535
Fax: (814) 723-4187
Warren, PA 16365
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