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Inteplast Group Building Products 3/4-in x 3-3/16-in x 8-ft Traditional Finished Polystyrene Baseboard Moulding

Name: Inteplast Group Building Products 3/4-in x 3-3/16-in x 8-ft Traditional Finished Polystyrene Baseboard Moulding
Brand: Inteplast Group Building Products
SKU: 1000576487
Rating: 4.5 (23 reviews)

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4.5

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Inteplast Moulding is designed to be low maintenance, easy to install, and ideal for areas where moisture is a concern. Choose from a wide variety of profiles and colors to add depth and detail to any ceiling, door, window, wall, or floor.

Prefinished - does not require painting or staining
Performs better than wood and MDF moulding in areas with high moisture
Quick and easy installation - just cut, nail, and install
An easy and affordable way to add character to a room

General
Color/Finish Family	Brown	Package Quantity	1
Finish	Finished	Use Location	Interior
Manufacturer Color/Finish	Sierra Brown	Installation Type	Finishing nails
Type	Baseboard	Edge Profile	Square
Material	Polystyrene	Paint Grade	No
Style	Traditional	Stain Grade	No

Dimensions
Actual Height (Inches)	3.19	Height Measurement	3-3/16-in
Actual Length (Feet)	8	Length Measurement	8-ft
Actual Thickness (Inches)	0.75	Thickness Measurement	3/4-in

Features
Finger-Joint	No	Moisture Resistant	Yes
Flexible	No	Pro Package	No

Certifications
CA Residents: Prop 65 Warning(s)	No

Warranty
Warranty	None

Miscellaneous
UNSPSC	30161900

Check out the Best Selling Baseboard Moulding on Lowes.com

Review

4.5 out of 5

23 Reviews

1 Star

100% Recommend this product

Ratings may include incentivized customer reviews.

23 Customer Reviews

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Great alternative to wood

Would Recommend

Looks great, easy to use and an inexpensive alternative

MichaelNovember 30, 2025
Verified Purchaser

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Response from Inteplast Team

Thank you for your 5 star review on our Sierra Brown Polystyrene Baseboard, Michael! We are happy to hear that you were satisfied with our Mouldings ...

Inteplast TeamDecember 1, 2025

Inteplast

Great product to work with

Would Recommend

I wish this came in longer lengths, but understand why it isn't available as it would be very fragile in the longer lengths. Having said that, it did match up nicely when joined with other pieces. I did color the miter cuts with a light colored furniture marker in case the joints became seperated. The interior of the product is white, and I was worried that it might show if the cuts were not accuurate. I don't think it was necessary as the joints went together so smoothly and seamlessly. This wa...

KentNovember 23, 2025

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Response from Inteplast Team

Thank you for your 5 star review on our Sierra Brown Polystyrene Baseboard! We are happy to hear that you were very satisfied with our product, and t...

Inteplast TeamNovember 24, 2025

Inteplast

Nice baseboards.

Would Recommend

The finish on these are nice and I like the fact they can get wet without swelling up (like the cheap-o baseboards from M*****'s). They perfectly match my flooring. I recommend these if you're looking for prefinished baseboards. They do need to make them in 12' lengths as well though (one star off because of that). Mine were 8' and a little shorter than I would have liked.

fishpotpeteFebruary 12, 2025
Verified Purchaser

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Response from Inteplast Team

Thank you for your 4 star review on our Sierra Brown Polystyrene Baseboard Moulding, Pete! We are happy to hear that you were satisfied with our prod...

Inteplast TeamFebruary 18, 2025

Inteplast

Low on stock

Very nice product but you don't have enough to finish the job so I have to check back every other day to see if you got more stock

FinishedApril 22, 2024
Verified Purchaser

Was this Review Helpful ?

Response from Inteplast Team

Thank you for your review on our Sierra Brown Polystyrene Baseboard! You can inquire with your Lowes store and see if they could place a special orde...

Inteplast TeamApril 22, 2024

Inteplast

Looks great

Would Recommend

Easy to install

MichaelJuly 18, 2023
Verified Purchaser

Was this Review Helpful ?

Response from Inteplast Team

Michael Thank you for your review on this Craftsman moulding as well as the other mouldings used. We're happy that you find our Prefinished Mould...

Inteplast TeamJuly 20, 2023

Inteplast

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COMPARE PRODUCTS

		Name	Current Item Inteplast Group Building Products3/4-in x 3-3/16-in x 8-ft Traditional Finished Polystyrene Baseboard Moulding
		Ratings	23
		Material	Polystyrene
		Finish	Finished
		Type	Baseboard
RELIABILT11/16-in x 3-1/2-in x 8-ft Craftsman Primed Finger Jointed 14 Baseboard Moulding	Inteplast Group Building Products3/4-in x 3-3/16-in x 8-ft Gray Traditional Finished Polystyrene Baseboard Moulding	Inteplast Group Building Products1/2-in x 4-in x 8-ft Modern Finished Polystyrene Sierra Brown Baseboard Moulding	RELIABILT9/16-in x 3-1/4-in x 8-ft Colonial Unfinished Pine 623 Baseboard Moulding	Inteplast Group Building Products3/8-in x 3-3/16-in x 8-ft Traditional Finished Polystyrene Baseboard Moulding	Inteplast Group Building Products1/2-in x 4-in x 8-ft Gray Modern Finished Polystyrene Grey Baseboard Moulding	Inteplast Group Building Products3/8-in x 3-3/16-in x 8-ft Traditional Finished Polystyrene Baseboard Moulding	RELIABILT9/16-in x 3-1/4-in x 12-ft Colonial Unfinished Pine 623 Baseboard Moulding	RELIABILT9/16-in x 3-1/4-in x 8-ft Colonial Primed Finger Jointed Pine 623 Baseboard Moulding
82	24	13	361	58	17	39	190	492
Wood	Polystyrene	Polystyrene	Wood	Polystyrene	Polystyrene	Polystyrene	Wood	Wood
Primed	Finished	Finished	Unfinished	Finished	Finished	Finished	Unfinished	Primed
Baseboard	Baseboard	Baseboard	Baseboard	Baseboard	Baseboard	Baseboard	Baseboard	Baseboard