About this product
260× stronger than the glass it replaces — at half the weight.
SHIELDS® Lexan® polycarbonate, formed to the exact shape of your John Deere window. Drops into the factory opening, reuses your existing hardware, and stays in the frame when something hits it.
✓ Guaranteed exact fit
Formed to OEM shape, milled to OEM thickness. No drilling, shimming or trimming.
✓ 10-year warranty
Against breakage, coating failure, excessive haze and yellowing.
✓ Damaged in transit? Replaced free
Report it within 7 days and the replacement is on us.
Fits: 444H / 444J
Sold as: Vertical window (LH or RH)
Available in: 1/4" only
Authorised SHIELDS® dealer. Every panel formed and coated in Indiana.
John Deere Loader 444 H & J Vertical Window Glass Replacement
If you're on this page, something already came through your window. The question isn't whether to replace it — it's whether to put the same glass back in and wait for it to happen again.
Factory glass is designed to break safely, not to survive what site work throws at a cab. This is the alternative. Same shape as your John Deere glass, same opening, same hardware, roughly 260 times the impact strength — and for most owners it's the last one they buy for that machine.
Will This John Deere Wheel Loader Window Fit Your Machine?
Lead time: 3-4 weeks (made to order). The current window for your selected option is shown beside the Add to Cart button.
John Deere Window Thickness Guide — Which Should You Buy?
This is the real decision on this page, and it's about what the machine does — not how careful the operator is.
1/4"General duty Matches your OEM glass exactly. Fine for yard duty, stockpiling and general loading. It won't shatter the way glass does, but it isn't an impact panel.
"Won't a thicker panel scratch?" It's the fair objection, and it's why we post-apply SUPERCOAT™ to both faces after forming rather than co-extruding it. Take steel wool to the surface and it wipes clean.
SHIELDS® Lexan Polycarbonate vs John Deere Factory Glass
SHIELDS® SUPERCOATED™ John Deere factory glass Impact strength Around 260× stronger Baseline Weight About half Baseline How it fails Flexes, takes the hit, stays in the opening Shatters, all at once, into the cab Wipers Yes — SUPERCOAT™ both faces Yes Fitment Drops into the factory opening Drops into the factory opening Warranty 10 years against manufacturing defects Varies by dealerInstalling Your John Deere Window
The panel drops into the factory opening and reuses your existing frame, gasket and mounting hardware. No drilling, no shimming, no trimming.
One thing worth doing while the old panel is out: look at the gasket. If it has hardened, cracked or taken a permanent set around the old glass, replace it before the new panel goes in. A tired gasket is the most common cause of a leak on an otherwise perfect install, and your dealer stocks them.
Install & care sheet: Download the SHIELDS® Installation, Care & Maintenance sheet (PDF) — worth reading before you start.
Install video: ##VIDEO_EMBED##
John Deere Window Warranty, Returns and Delivery
Ten-year warranty against manufacturing defects — breakage, coating failure, excessive haze and excessive yellowing. Scratching from use isn't covered, and nobody should tell you otherwise.
Returns. If the panel arrives defective, or we send the wrong part, we put it right at our cost. If you simply change your mind, the panel can be returned subject to a 25% restocking fee. That's the whole policy — no small print.
Open the carton before the driver leaves. Look the panel over, and if anything is damaged, write it on the carrier receipt before you sign. Photograph the packaging and the panel and send us the photos within 7 days — inside that window we replace it at our cost, no argument. Past it, the carrier won't accept the claim.
John Deere Loader 444 H & J Vertical Window — Questions
Can I fit this myself, or does it need a shop?
It's a mechanical install — the panel drops into the factory opening and your existing frame, gasket and hardware go back on. No drilling or trimming. A second pair of hands makes seating it easier.
Do I need to replace the gasket?
Not always, but inspect it while the old panel is out. If it's hardened, cracked or has taken a permanent set, replace it before fitting — a tired gasket is the usual cause of a leak after an otherwise correct install. Your dealer stocks them.
How do I know this is the right panel for my machine?
Match the shape and the opening first, then confirm against the part your dealer lists for that position. If anything looks different from the panel you are replacing, check before fitting rather than after — a modified panel is not a warranty claim.
Does it come with hardware?
No, and it does not need to. The panel is formed and milled to seat in your existing frame, so the hardware from your original glass transfers straight across.
How do I clean a Lexan polycarbonate windshield?
Mild soap and water with a soft cloth, then dry it off. Avoid abrasive cleaners, squeegees and power washers — those mar the coating, and coating damage from the wrong cleaner isn't a warranty claim. The care sheet lists approved products.
Will it fog or go yellow?
Yellowing is slow and UV-driven, which is why the warranty names excessive yellowing specifically. For fogging, treat it as you would glass — keep the cab vented and the panel clean.
Is it worth it over another sheet of factory glass?
Depends what broke the first one. If it was a stone off the haul road, glass is fine. If it was brush, demolition debris or anything under tension, you'd be buying the same outcome again — and paying the labour twice.
Ready to order?
Confirm your glass number, answer the options above and pick your thickness — then add it to the cart. Backed by a 10-year warranty and free replacement for freight damage.
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