Engineering Drawing
Truck Bed Sign Frame System
DWG-001
63" × 22"
QTY: 100 Units
Parts List Bill of Materials — Per Unit
1
Top Rail — U-Channel
1" × 1" × 1/8" aluminum U-channel, 63" long. Slot faces DOWN. Sign slides in from open right end. 1/4" internal slot width accepts coroplast.
2
Bottom Rail — U-Channel
1" × 1" × 1/8" aluminum U-channel, 63" long. Slot faces UP. Mirrors top rail. Three mounting tabs welded to OUTSIDE face.
3
Side Posts (×2)
1" × 1" × 1/8" aluminum square tube, 22" tall. Welded or riveted to top and bottom rails. Caps the open ends of the channels.
4
Mounting Tabs (×3)
2" × 2" × 1/8" steel or aluminum plate welded to outside bottom rail at left, center, right. Pre-drilled with 3/8" hole for U-bolt/clamp hardware.
5
Coroplast Sign Insert
63" × 22" × 4mm (≈1/4") coroplast sheet, full-color UV printed. Slides into frame from right side. Replaceable — the business model!
Dimension Specs All measurements in inches
| Component | Dimension | Notes |
|---|---|---|
| Frame — Overall Width | 63.00" | Outside edge to edge |
| Frame — Overall Height | 22.00" | Outside edge to edge |
| Sign Insert | 63" × 22" | Coroplast, 4mm thick |
| Channel Slot Width | 1/4" (6mm) | Tight fit on 4mm coro |
| Rail Profile | 1" × 1" | U-channel, 1/8" wall |
| Side Post Profile | 1" × 1" | Square tube, 1/8" wall |
| Mounting Tabs | 2" × 2" | 1/8" plate, 3 positions |
| Tab Hole Diameter | 3/8" | U-bolt / spring clamp |
| Tab Spacing | ~20" apart | L / Center / R |
| Frame Weight (est.) | ~4.5 lbs | 6061 aluminum |
Material Recommendation
A
6061 Aluminum ✓ BEST
Lightweight (~4.5 lbs/frame), rust-proof, no painting needed, professional look. Standard at metal suppliers. Slightly more $/lb but saves finishing cost. Recommended for this application.
B
Powder-Coated Steel
Cheaper material cost, but heavier (~12 lbs) and must be powder coated to prevent rust. Good for bulk shop production. Best if local welder is quoting.
C
Galvanized Steel
Rust resistant without coating. Harder to weld cleanly. Not recommended — heavier with no real advantage over aluminum at this size.
Cost Estimate 100-unit production run
Per Frame — Aluminum (US Fab)
Aluminum U-channel (2× rails)$6–9
Sq. tube side posts (2×)$3–5
Mounting tab plates (3×)$1–2
MIG weld labor (4 joints)$8–15
U-bolts / clamps (×3)$3–5
TOTAL / FRAME
$21–36
Per Sign — Coroplast Print
63"×22" UV print (100+ qty)$8–14
Coroplast sheet materialincl.
FRAME + SIGN
$29–50
★ Overseas (Alibaba): $12–18/frame at MOQ 100+. Add ~$3–5 shipping per unit.
Who to Contact
① Local Metal Fab / Welding Shop
Search "aluminum welding fabrication Houston TX" or "metal fab Rosenberg TX." Bring this drawing. Request quote for 100-unit run. Best for fast turnaround, US quality, easy revisions.
② Online Metal Supplier (Cut-to-size)
metals4u.com, OnlineMetals.com, MetalSupermarkets.com — order pre-cut U-channel and tube stock, then have local welder assemble.
③ Alibaba Manufacturer
Search: "aluminum u-channel display frame custom" or "aluminum sign frame manufacturer." Ask for 100pc MOQ sample quote. Ship to Houston port. Lead time: 4–6 weeks.
④ Coroplast Sign Printer
GotPrint.com, BuildASign.com, SignWarehouse.com, or local Houston sign shop. Order 4mm coroplast at 63"×22" with full-bleed UV print.
Assembly Sequence For fabricator reference
1
Cut Rails: Saw two pieces of 1"×1" aluminum U-channel to exactly 63". Slots must be consistent width (1/4" internal).
2
Cut Posts: Saw two pieces of 1"×1" aluminum square tube to 20" (22" overall frame height minus 2× 1" rail height).
3
Cut Tabs: Cut three 2"×2" squares from 1/8" aluminum flat plate. Drill 3/8" center hole in each. Deburr edges.
4
Orient Rails: Top rail — slot faces DOWN. Bottom rail — slot faces UP. Ensure channels are parallel and aligned.
5
Weld / Rivet Corners: Attach side posts to left and right ends of both rails. Square up to 90° and tack-weld or use pop rivets (4 joints total per frame).
6
Weld Mounting Tabs: Weld 3 tabs to OUTSIDE face of bottom rail at positions: ~8" from left, center (31.5"), ~8" from right. Holes face outward.
7
Finish: Grind welds smooth. Light sand or anodize if desired. Aluminum needs no paint — natural finish works.
8
Test Insert: Slide a 63"×22" coroplast sheet in from the open end. Should slide smoothly. Install U-bolts through tabs to mount on truck bed rail.
Ideogram AI Image Prompt
PROMPT: Professional product photography of a custom aluminum metal sign frame, 63 inches wide by 22 inches tall, silver anodized finish, U-channel rails top and bottom with a visible 1/4-inch slot for sliding in a coroplast sign, square tube side posts, three welded mounting tabs on the bottom rail with pre-drilled U-bolt holes, clean welds, industrial fabrication quality, photorealistic, white studio background, technical product shot, isometric 3/4 angle view showing both front and bottom mounting tabs, sharp focus, professional lighting, no text overlays
STYLE: Photorealistic, product photography, studio white background, 3/4 isometric view
NEGATIVE: cartoon, illustration, sketch, blurry, dark background
STYLE: Photorealistic, product photography, studio white background, 3/4 isometric view
NEGATIVE: cartoon, illustration, sketch, blurry, dark background
POP UP TENT EVENTS — PROPRIETARY DESIGN — REV A — APRIL 2026 — DWG-001