Wooden Stretcher Bars

Pine Wood Bars for Stretched Canvas, Gallery Wrap and Canvas Frame Production

Wooden stretcher bars form the structural foundation of every stretched canvas. The right profile affects frame strength, canvas tension, long-term stability and the final presentation of the artwork.

Gowin supplies finger-jointed kiln-dried pine wood stretcher bars for canvas printing factories, framing workshops, wall decor brands, art supply wholesalers and pre-stretched canvas manufacturers.

During production, we check profile dimensions, corner fit, surface sanding, moisture control, supporting bar requirements and packing details before bulk shipment.

Quick Purchase Snapshot

Use this quick check to confirm whether Gowin matches your basic purchasing requirements before reviewing profile details.

Purchase Checkpoint	Gowin Capability
Item	Gowin
Material	Pine wood
Moisture	Kiln dried
MOQ	1000 pcs/size as a standard; can be less depending on the whole order
OEM	Yes
Bespoke Profiles	Yes, with quantity support
Finger Joint	Yes
DDP	Yes

What Are Canvas Stretcher Bars?

Canvas stretcher bars are the wooden frame components used to build the structure behind stretched canvas prints or paintings. Once the bars are assembled into a rectangular frame, the canvas is pulled taut and fixed to the edges, creating a clean and tensioned surface for display, framing or gallery presentation.

Traditionally, stretcher bars were used by painters for hand-stretched canvas. Today, they are also essential in digital print production, photo canvas, gallery wrap, wall decor and pre-stretched canvas manufacturing. The strength and accuracy of the stretcher bar directly affect the long-term appearance, flatness and stability of the final canvas product.

Gowin has a YouTube channel. If you cannot visit the factory in person, you can watch the video to see the wooden bar production and frame assembly process. (https://www.youtube.com/@Gabriela_Gowin)

Wooden Stretcher Bar Product Series

We group wooden stretcher bars by frame application and structure, not only by SKU. This helps you choose the right profile for your canvas product line.

Series	Best For	When to Choose
Standard Wooden Stretcher Bars	Regular stretched canvas, framed canvas, artist canvas and art supply wholesale	When you need practical profiles for common canvas frame production.
Gallery Wrap Stretcher Bars	Photo canvas, wall decor, frameless canvas prints and home decor brands	When the side profile becomes part of the final display effect.
Heavy Duty & Large Format Stretcher Bars	Large wall art, hotel decoration, commercial interiors and oversized canvas frames	When you need stronger structure and better support for larger frames.
Supporting Bars & Bespoke Profiles	Large canvas frames, thin/thick canvas matching, OEM profiles and anti-warping support	When frame stability, adjusted assembly or long-term repeat production matters.

Manufacturer Notes on Profile Selection

In our experience, customers producing gallery wrap usually care about side depth, corner appearance and whether the staples or fasteners stay away from the visible edge.

For large wall art, hotel decoration and commercial interiors, we check whether the frame needs a heavier profile or supporting bars before confirming the order.

During machining, we also pay attention to edge shape and surface sanding because rough edges can damage canvas or create uneven stretching tension.

Choose the Right Stretcher Bar by Application

If you are sourcing wooden stretcher bars, the key question is not who buys them. The real question is which profile fits your canvas product, frame size and display style.

Your Application	Suggested Profile	Why It Fits
Standard Stretched Canvas	Standard Wooden Stretcher Bars	Choose standard profiles when you need regular canvas frames, artist canvas or framed canvas production.
Gallery Wrap Canvas	Gallery Wrap Stretcher Bars	Choose deeper profiles when the side of the canvas becomes part of the finished display.
Large Wall Art	Heavy Duty Stretcher Bars	Choose stronger or deeper profiles when the frame needs better structure and stability.
Oversized Frames	Heavy Duty Bars + Supporting Bars	Choose supporting bars when the frame size increases and deformation risk becomes higher.
Museum Reproduction	Gallery Wrap or Bespoke Profiles	Choose profiles that support premium presentation, stable stretching and repeatable quality for art reproduction projects.
Hospitality Projects	Heavy Duty Bars + Supporting Bars	Choose stronger profiles for hotel decoration, lobby artwork and large-scale wall decor installations.
Corporate Artwork	Gallery Wrap or Heavy Duty Bars	Choose profiles based on display size, side appearance and long-term hanging stability.
Interior Designers	Gallery Wrap or Bespoke Profiles	Choose profiles that match the visual depth and style required for interior decoration projects.
Commercial Framing	Standard or Bespoke Profiles	Choose profiles that fit your assembly method, frame system and repeat production needs.
OEM Canvas Production	Bespoke Profiles	Choose bespoke profiles when you need a specific thickness, width, structure, packing or long-term repeat production standard.

Profile Selection Table by Canvas Size

Canvas size is one of the fastest ways to narrow down the right stretcher bar profile. The following guide is a starting point; final selection should also consider canvas weight, stretching tension, display method and packing.

Canvas Size	Suggested Profile	Why
<= 40 x 50 cm	Standard Bars	For small and regular canvas frames where structure demand is lower.
60cm+ long side	Standard Bars + Consider Supporting Bar	From about 60cm long side, supporting bars should be considered depending on canvas tension and frame use.
50 x 70 cm	Gallery Wrap Bars	For photo canvas and wall decor where the side profile is part of the display.
Up to about 100cm with 1.6cm thin profile	Thin Standard Bars	A 1.6cm thick stretcher bar is usually better for frames up to about 100cm. For larger frames, a thicker profile helps reduce deformation risk.
>= 80 x 100 cm	Heavy Duty Bars + Supporting Bars	For larger wall art where frame strength and anti-deformation support matter more.
Oversized / project-based	Bespoke Profile + Supporting Bars	For hotel, corporate, museum or commercial framing projects with specific structure and packing needs.

How We Check Before Production

Before sampling or bulk production, we confirm the final canvas product, size range, profile depth, assembly method, support requirement and packing plan. This avoids treating stretcher bars as only a price-per-piece item.

Step	What We Check	Why It Matters
1. Application	Artist canvas, photo canvas, gallery wrap, wall decor or large format frame	The final product decides the profile and structure requirement.
2. Canvas Size	Small, medium, large or oversized canvas	Larger canvas often needs deeper profile, stronger bar or supporting bar.
3. Profile	Thickness and width, such as 1.6 x 3.5cm, 3.8 x 3.5cm or 5.5 x 3.5cm	Profile affects frame depth, strength, side appearance and packing.
4. Structure	Tenoned or non-tenoned stretcher bars	Assembly method affects production speed, stability and customer preference.
5. Support	Supporting bars for thin canvas, thick canvas or large frame structures	Supporting bars help reduce deformation risk and improve frame stability.
6. Packing / MOQ	1000pcs per size as a standard; final MOQ can depend on the whole order	Packing and MOQ affect purchasing cost, shipping and inventory planning.

Material and Production Details

Why Pine Wood?

Gowin focuses on finger-jointed kiln-dried pine wood stretcher bars because pine offers more stable supply, longer available lengths and better overall production reliability for stretcher bar orders. Fir is often limited to around 1m and may have higher moisture concerns, while paulownia is now used much less in this product category.

Reason	Why It Matters
Stable supply	Pine is easier to source consistently, which helps support repeat orders, larger quantities and long-term canvas frame production.
Longer available lengths	Pine can support longer stretcher bar lengths more reliably. This matters when you need larger canvas frames or more flexible size planning.
Better moisture control than many fir options	Fir is often limited to around 1m and can have higher moisture concerns. For stretcher bars, moisture control matters because wood movement can affect frame stability.
Paulownia is less commonly used now	Paulownia is now used much less for this type of production, so it is not our preferred material for stable long-term supply.
Balanced production performance	Considering supply, length, moisture control, machining and cost together, pine wood is our regular production choice for most stretcher bar orders.

Advantages of Our Pine Wood

For canvas frame production, wood quality affects more than the first assembly. Moisture control, milling accuracy, surface smoothness and packing consistency all influence how the stretcher bar performs during stretching, shipping and long-term display.

Advantage	Why It Matters
Kiln drying	Removes excess moisture and helps improve dimensional stability for canvas frame production.
Precision milling	Each bar is milled, inspected and finished to keep profile size more consistent across repeat shipments.
Lightweight yet strong	Helps with large format frame handling, packing and shipping while still supporting canvas tension.
Renewable sourcing	Pine can be sourced from renewable forest resources, supporting more eco-conscious production planning.
Smooth-sanded finish	A smooth surface helps reduce splinters, canvas tears and uneven contact during stretching.
Finger-jointed construction	Shorter pine sections are joined into longer, more consistent bars, helping improve straightness, material use and repeat production stability.
Controlled slight knots	Standard pine wood may have slight sound knots unless a higher-grade knot-free requirement is confirmed before production.

Finger-Jointed Pine Wood

Finger-jointed pine wood is useful for stretcher bars because it allows shorter pine sections to be joined into longer, more consistent bar lengths. For canvas frame production, this helps reduce waste, improve length availability and support more stable repeat orders.

Finger-jointing also helps us select and arrange wood sections more carefully before machining. Instead of relying only on one long natural piece of wood, the production process can remove unsuitable sections and join better pieces together. This helps improve straightness and consistency, which matters when the frame must stay flat under canvas tension.

About Slight Knots in Pine Wood

Unless you have a special requirement, our regular pine wood stretcher bars may have slight sound knots. This is a normal feature of pine wood and should not be confused with large loose knots, cracks or unstable defects.

For most stretched canvas and gallery wrap production, slight knots are acceptable when the bar is kiln-dried, finger-jointed, precision-milled and smooth-sanded. If your market requires higher-grade appearance, fewer knots or a stricter knot-free standard, please tell us before sampling and quotation so we can confirm feasibility, cost and MOQ.

Useful Industry Terms to Confirm

When sourcing canvas frame bars, different markets may use slightly different terms. Confirming these terms early helps avoid ordering the wrong structure.

Stretcher bars: wooden bars assembled into a frame for stretched canvas.
Strainer bars: a related frame structure that is generally not intended for later tension adjustment.
Keys / wedges: small pieces sometimes used in traditional stretcher frames to adjust canvas tension after assembly.
Supporting bars: also called cross bars or cross braces in some markets; these support pieces are used inside larger frames to improve stability.
Gallery wrap profile: a deeper side profile used when the canvas wraps around the edge and is displayed without an outer frame.

Tenoned and Non-Tenoned Options

We can supply both tenoned and non-tenoned stretcher bars for different assembly methods. Before production, we confirm how your team or end customer assembles the frame.

Adjustable Assembly Fit for Different Users

In real production and sales, assembly preference is not always the same. Some workshops want the corner fit to be tighter because workers tap the bars together with a small hammer. Some DIY brands want the frame to be easier to assemble completely by hand, so end users can put the frame together without tools.

We can adjust the assembly feel according to your customer group, profile structure and quality standard. This is especially useful for DIY canvas frame products, art supply retail, craft kits and OEM programs where the final user experience matters.

Gowin has a YouTube channel. If you cannot visit the factory in person, you can also watch the video to understand the assembly process.(https://www.youtube.com/@Gabriela_Gowin)

Bespoke Stretcher Bar Profiles

For OEM and project-based customers, bespoke stretcher bars can be developed around your canvas size range, required profile depth, corner structure, assembly fit, supporting bar standard and packing method.

This is different from choosing a ready-made SKU only. A bespoke profile is useful when your product line needs a consistent frame depth, a specific gallery wrap appearance, a special assembly feel, or a repeated private label standard. Bespoke development requires quantity support, so we confirm feasibility, MOQ and sampling before bulk production.

Wooden Stretcher Bar Specifications

Field	Content
Material	Finger-jointed kiln-dried pine wood
Available profile range	Approx. 1.4cm to 5.5cm thickness; approx. 2.4cm to 6.0cm width
Structure options	Finger-jointed construction; tenoned and non-tenoned stretcher bars available for different assembly needs
Supporting bars	Options for thin canvas, thick canvas and selected large frame structures
Common uses	Stretched canvas, gallery wrap, photo canvas, wall decor, artist canvas and pre-stretched canvas manufacturing
MOQ	1000pcs per size as a standard; can be less depending on the whole order
Terms	FOB for full container order; otherwise EXW factory price
Logistics	End-to-end logistics solutions available, including DDP delivery to your door

Sample Testing & OEM Customization

For stretcher bars, sample testing should check more than dimensions. During sample review, we inspect profile fit, corner assembly, canvas stretching result, frame stability, packing method and compatibility with your production workflow.

If your customers have a clear assembly preference, we confirm whether the fit should be tighter for hammer-assisted assembly or slightly easier for tool-free hand assembly before bulk production.

Our standard MOQ is 1000pcs per size, but it can be less depending on the whole order. For full container orders, pricing can be FOB; otherwise it is usually EXW factory price. Gowin can also provide end-to-end logistics solutions, including DDP delivery to your door.

OEM options may include:

Bespoke thickness and width profile
Tenoned or non-tenoned structure
Assembly fit adjustment for tighter hammer assembly or easier hand assembly
Supporting bar options for large frames
Packing and carton customization
Profile matching for thin canvas or thick canvas

FAQ

What are canvas stretcher bars?

Canvas stretcher bars are wooden frame components used to build the structure behind stretched canvas prints or paintings. After assembly, the canvas is pulled taut and fixed to the edges, creating a clean and tensioned surface for display, framing or gallery presentation.

Why do you use pine wood for stretcher bars?

We use pine wood because it offers more stable supply, longer available lengths and better overall production reliability for stretcher bar orders. Fir is often limited to around 1m and can have higher moisture concerns, while paulownia is now used much less.

Are your stretcher bars kiln-dried?

Yes. Gowin supplies kiln-dried pine wood stretcher bars. Proper drying helps improve moisture control and production consistency for stretched canvas and frame manufacturing.

Do you offer finger-jointed stretcher bars?

Yes. Our pine wood stretcher bars use finger-jointed construction. Finger-jointed wood helps shorter pine sections become longer, more consistent bars, supporting better straightness, material use and repeat production stability.

Will pine wood stretcher bars have knots?

Unless you have a special requirement, regular pine wood stretcher bars may have slight sound knots. This is normal for pine wood. We avoid large loose knots, cracks and unstable defects, and we can discuss stricter appearance requirements before sampling.

When should I add supporting bars?

As a practical rule, supporting bars should be considered when the long side reaches about 60cm or more. Larger frames, thick canvas, hospitality projects and repeat OEM production need more attention to frame stability.

Can the stretcher bar assembly fit be adjusted?

Yes. Some customers prefer a tighter fit because they assemble frames with a small hammer, while others prefer an easier fit for tool-free hand assembly. We can discuss the assembly feel according to your customer group, frame profile and OEM requirement.

Can you make bespoke stretcher bar profiles?

Yes. We can discuss bespoke thickness, width, structure, assembly fit and packing for qualified bulk orders. Bespoke profiles require quantity support, so we confirm feasibility, MOQ and samples before bulk production.

What is the MOQ and can you arrange shipping?

The standard MOQ is 1000pcs per size, but it can be less depending on the whole order. Gowin can provide logistics support, including DDP delivery to your door when needed.

Need Wooden Stretcher Bars for Your Canvas Frames?

Tell us your canvas size, frame application, required profile, assembly method, supporting bar needs, packing requirement and estimated order quantity. Gowin will check the suitable profile and prepare samples for testing.

Explore Wooden Stretcher Bar Solutions

Use these category pages to choose the right stretcher bar profile for your canvas frame, display style and production needs.

Solution	Best For
Standard Wooden Stretcher Bars	For regular stretched canvas, artist canvas, art supply wholesale and standard frame production.
Gallery Wrap Stretcher Bars	For photo canvas, frameless canvas prints, wall decor and home decor brands that need a thicker side profile.
Heavy Duty & Large Format Stretcher Bars	For large canvas frames, hotel decoration, commercial interiors and oversized wall art.
Supporting Bars & Bespoke Profiles	For large frame support, thin/thick canvas matching, tenoned/non-tenoned options and OEM profiles.