38 × 28 mm Pine Wood Stretcher Bars for Gallery Wrap Canvas

38 × 28 mm Pine Wood Gallery Wrap Stretcher Bars – CR3828

CR3828 is a 38 × 28 mm pine wood stretcher bar profile developed for professional gallery wrap canvas, canvas prints and stretched wall-art production. The 38 mm depth creates a deep gallery-wrap appearance, while the narrower 28 mm width helps reduce unnecessary wood weight and packing volume compared with wider profiles.

Produced from selected kiln-dried pine, this profile is suitable for canvas printing companies, framing workshops, wall-art manufacturers, art suppliers and wholesale distributors requiring repeatable dimensions, clean machining and stable frame assembly.

Custom lengths, cross bars, assembled frames and OEM packing can be supplied according to project requirements.

38 × 28 mm Profile Dimensions

The CR3828 profile combines a 38 mm depth with a 28 mm width. This makes it suitable for buyers who want the visual depth of a gallery-wrap frame while keeping the wooden profile relatively compact.

The narrower width can help reduce frame weight and improve packing efficiency, while the 38 mm depth maintains the deeper side appearance commonly used for gallery-wrap canvas.

For very large or oversized artwork, a wider or heavier profile may be more appropriate depending on frame dimensions, canvas tension and support requirements.

When Is a 38 × 28 mm Stretcher Bar a Good Choice?

For oversized applications, see our Heavy Duty & Large Format Stretcher Bars for stronger profile options.

Kiln-Dried Pine for Better Dimensional Stability

Wood quality has a direct influence on stretcher-bar straightness, machining accuracy and final frame assembly. Selected kiln-dried pine is therefore used for CR3828 production.

Key points checked during wood selection and machining include:

• Wood condition and visible defects
• Straightness
• Warp and twist
• Profile consistency
• Surface condition
• Machining accuracy

Moisture requirements can be controlled according to the agreed product specification and destination market.

Raised & Rounded Edge for Safer, Smoother Canvas Stretching

A professional stretcher bar should not only have a raised outer edge. The canvas-contact edge should also have a properly controlled rounded radius rather than an excessively sharp 90-degree corner.

The raised profile helps keep the front of the stretched canvas away from the main face of the wooden bar. This reduces the risk of visible contact or impression lines appearing on the finished canvas surface.

The rounded edge serves a different but equally important function. During stretching, the canvas needs to bend and move around the outside edge of the frame. A sharp corner creates a very small bending radius and concentrates stress in a narrow area, while a smoother radius allows the canvas to transition around the profile more progressively.

This becomes particularly important with printed canvas and gallery-wrap production. The printable coating and ink layer must bend together with the fabric. If printed canvas is forced around an excessively sharp edge, localized stress may increase the risk of cracking, surface whitening or visible white lines, particularly in dark or heavily printed image areas.

A properly finished radius also improves manual handling. Edges are checked for excessive sharpness, rough machining and splinters that could interfere with frame assembly or canvas stretching.

Precision Machining for Accurate Frame Assembly

Consistent stretcher-bar machining is important because the accuracy of the joint directly affects corner fit, frame dimensions and final squareness.

CR3828 stretcher bars are machined to maintain consistent joint geometry and repeatable assembly. The profile ends, joint slots and mating surfaces are checked to reduce unnecessary gaps, misalignment and assembly variation.

Quality Control for Consistent Frame Assembly

For professional canvas printers and frame manufacturers, dimensional consistency is critical. Variation in profile dimensions, length, straightness or joint machining can affect the squareness and repeatability of the finished frame.

Cross Bars, Assembled Frames and Canvas Stretching

Cross bars can be added when frame dimensions or canvas tension require additional structural support. The support configuration should be selected according to the finished frame size and application.

Colors Art can supply:

• Loose CR3828 stretcher bars
• Cross bars
• Corner brace options
• Pre-assembled canvas frames
• Custom sizes for production projects

For large-volume canvas production, repeatable frame dimensions become particularly important. Differences in outer dimensions, diagonal measurements or corner fit can create problems during manual and automated stretching processes.

Colors Art assembled canvas frames have been tested with Fast Frame 1000+ and Fast Frame 1200+ automatic canvas stretching equipment, where consistent frame dimensions are especially important for repeat production.

For additional profiles, visit our Wooden Canvas Stretcher Bars category.

Factory Production and OEM Capability

Colors Art manufactures wooden stretcher bars and assembled canvas frames for professional canvas printing, framing and wall-art production.

Custom lengths, profiles, frame sizes and packing configurations can be developed according to project requirements.

OEM options include:

• Custom stretcher-bar lengths
• Custom wooden profiles
• Cross-bar configurations
• Assembled canvas frames
• Private-label packing
• Wholesale and project-specific packaging

Our wooden stretcher-bar and frame production facility covers approximately 15,000 m² and supports bulk production for wholesale, framing and wall-art projects.

Learn more about our manufacturing capabilities on the About Colors Art page.

Responsible Timber Sourcing Options

For projects requiring certified timber documentation, FSC-related sourcing requirements can be discussed according to order specification and supply-chain availability.

FSC Chain of Custody provides a system for identifying and tracking certified forest-based materials through the supply chain.

For more information, see the Forest Stewardship Council Chain of Custody resource.

Packing for Wholesale and Export Orders

Packing can be configured according to the form in which the product is supplied. Loose stretcher bars, assembled frames and large project orders may require different packing methods to protect the profiles and use shipping space efficiently.

Available packing configurations can include:

• Carton packing for loose stretcher bars
• Pre-assembled frame packing
• Palletized shipments
• Container orders
• OEM labeling
• Customer-specific packing requirements

Frequently Asked Questions

What does 38 × 28 mm mean on a stretcher bar?

The CR3828 profile is approximately 38 mm deep and 28 mm wide. The 38 mm depth provides the deeper side appearance commonly associated with gallery-wrap canvas.

Why is the outer edge raised and rounded?

The raised edge helps keep stretched canvas away from the main face of the wooden bar, while the rounded radius provides a smoother transition as the canvas bends around the frame. This is particularly useful for printed canvas because an excessively sharp edge can concentrate stress in the coating and ink layer.

Can a sharp stretcher-bar edge damage printed canvas?

An excessively sharp edge creates a very small bending radius and concentrates stress where the canvas turns around the frame. Depending on the canvas coating, ink system and stretching tension, this may contribute to cracking, surface whitening or visible white lines in printed areas.

Is CR3828 suitable for gallery wrap canvas?

Yes. CR3828 is designed for gallery-wrap canvas, photo canvas and stretched wall-art applications when its strength is appropriate for the selected frame size.

When should a cross bar be added?

Cross bars are generally considered when larger frame dimensions or higher canvas tension require additional structural support. The final support configuration should be selected according to frame size and application.

Is CR3828 a heavy-duty stretcher bar?

CR3828 is a deep gallery-wrap profile, but very large or oversized frames may require a wider or heavier profile. For those applications, see our Heavy Duty & Large Format Stretcher Bars .

Can you manufacture custom stretcher bar profiles and sizes?

Yes. Custom lengths, profiles, cross-bar configurations, assembled frames and packing can be discussed for OEM and project orders.

Can Colors Art supply assembled canvas frames?

Yes. Both loose stretcher bars and pre-assembled wooden canvas frames can be supplied according to the customer's production requirements.

You can also read our Canvas Stretcher Bars Buyer’s Guide for more information about profile selection, wood quality, support options and professional canvas-frame production.