Ready Plastics
FR4SheetNatural

FR4 - 3.375" 36 x 48 Natural Sheet - 3.375 in × 36 in × 48 in Sheet

3.375 in × 36 in × 48 in Sheet

FR4 - 3.375" 36 x 48 Natural SheetFR4 - 3.375" 36 x 48 Natural Sheet - view 2FR4 - 3.375" 36 x 48 Natural Sheet - view 3
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This FR4 sheet measures 3.375″ thick, 36″ × 48″, finished in natural. Available to order — price $5213.99 per Each.

SpecificationValueTolerance
Shape / FormSheet
Thickness3.375″Standard
Width36″Standard
Length48″Standard
ColorNatural
Weight389.781 lbs
About This Product

Built for demanding electrical and structural applications, this FR4 Glass Epoxy sheet features a substantial 3.375" thickness and a full 36.0" x 48.0" format in Natural color for dependable performance in large-format fabrication. The extra-thick sheet delivers exceptional rigidity, high dielectric strength, and strong moisture resistance, making it an excellent choice for insulating fixtures, machined components, and heavy-duty support panels.

Specifications

Shape

Sheet

Thickness

3.375 in

Width

36 in

Length

48 in

Weight

389.781 lbs

Color

Natural

Unit of Measure

Each

Other FR4 sizes

← All FR4stock & specs

Price

$5213.99 / Each

In Stock
21010 available
Available at 11 locations

$150 order minimum

Ships same day if ordered by 2pm
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Quick Info
CategoryFR4
FormSheet
Thickness3.375 in
Width36 in
Length48 in
Weight389.781 lbs

Typical Properties — FR4 - 3.375" 36 x 48 Natural Sheet

Glass Epoxy Fr4
Mechanical
PropertyTest MethodUnitValue
Tensile strengthpsi / MPa65,000 / 445
Compressive strengthpsi / MPa38,000 / 260
Flexural strength (LW -A 0.125″)psi / MPa60,000 / 410
Bond strengthpsi / MPa2,300 / 15
Shear strengthpsi / MPa21,500 / 145
Hardness (M scale)115
Izod impact strength at 49°C (LW)14.00
General
DescriptionValue
Specific gravity1.85
Flammability rating94V-0
Water absorption (24 hours)0.10
Operating Environment
PropertyTest MethodUnitValue
Maximum temperature°C / °F140 / 280

Typical properties are provided for reference only. Values may vary based on processing conditions, form factor, and lot. Contact Ready Plastics for certified test data.