Canvas Frames, Stretcher Bars & Blank Canvas · 8 models
Wooden Stretcher Bars — Pine and Fir Bars for Canvas
Stretcher bars are the raw material of canvas framing: four lengths that a framer assembles into whatever size an order needs, with a rebate at the face and a joint at each corner so the canvas can be tensioned. A trade buyer buys by length and section, and the two numbers that decide the order are the bar depth - which has to clear the frame rebate - and the units per carton, because bars are a volume product.
The models in this group are pine and fir bars in standard lengths, with the section and depth stated per model where the supplier records them. This is the subcategory where the market has the clearest gap: the retail side of stretching is dominated by custom services, and the trade side needs standard bars in quantity with honest measurements. The pages here are written for the framer who has to match a bar to a canvas and a carton to a pallet.
Typical range
| Length | standard lengths for small to large frames; per model |
|---|---|
| Section | typically 20-40 mm wide; stated per model |
| Depth | typically 20-40 mm deep; stated per model |
| Wood | pine and fir; species stated per model |
| Carton | flat cartons in multiples; count stated per model |
| MOQ | quoted per model; carton multiples are normal |
What buyers check first
- Match the bar depth to the frame rebate, not the bar width: depth is the measure that decides whether the stretcher clears the moulding.
- Ask for the length tolerance, because a set of four bars that are not equal makes a frame that will not square.
- Confirm the joint: mitred, finger-jointed or mortised, and whether the bars are pre-notched for a cross-brace.
- Get the units per carton and the carton length before the order; long cartons are a freight decision.
Stretcher bar sections: a practical reference
| Section | Typical use | What to confirm |
|---|---|---|
| Shallow, about 20 mm | light cotton canvas, standard picture frames | clears a standard rebate |
| Mid, about 25-30 mm | general canvas work and gallery wrap | depth under the frame moulding |
| Deep, about 35-40 mm | heavy canvas, large formats | canvas weight and corner joint strength |
| Bar length | matched to the frame size ordered | tolerance and whether pre-notched for a brace |
Sections are the trade reference values for this group; the recorded section and depth for each model are on its product page. No CBM or container-loading figure is published as fact - the carton arithmetic on this site is an estimate for planning.
8 models
Sorted by completeness of the model record
Wooden Canvas Stretcher Bar with Oil Painting
Wooden Canvas Stretcher Bar Kit with Tenon Joints and Oil Painting
Wooden Stretcher Bar with Canvas Frames and Oil Painting
Wooden Stretcher Bar with Canvas Frames and Tenon Joints
Pine Wooden Canvas Stretcher Bar Kit with Oil Painting
Pine Canvas Stretcher Bar with Oil Painting and Tenon Joints
Pine Wooden Stretcher Bar with Oil Painting
Wooden Canvas Stretcher Bar with Tenon Joints
FAQ — Stretcher Bars
What depth stretcher bar should a framer stock?
Two depths cover most work: a shallow bar of about 20 mm for light canvas and standard frames, and a deeper bar of about 35-40 mm for heavier canvas and gallery wrap. The depth has to clear the frame rebate and carry the tension of the canvas; the width is a visual and weight decision. A framer who stocks only one depth usually stocks the mid range and turns away the very deep or very shallow jobs, which is why the recorded depths per model are worth comparing before an order.
Are the bars pre-notched for cross-braces?
It depends on the model and the page states it where the supplier records it. A cross-brace or a centre-bar is needed on larger formats to stop the bars bowing inward when the canvas is tensioned, and a pre-notched bar saves the framer a machining step. Where a model is not pre-notched, a framer can notch locally, but the joint has to be square. If the format you sell is over about 90 cm on a side, ask which models in the range are notched before choosing stock.
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