Clean product display showing the Cumberland DLX white window security envelope with matching insert, highlighting the blue internal security pattern, address window and strip seal closure against a white background.
Single Cumberland DLX window envelope displayed on a professional office desk beside a laptop, pen and desktop accessories, illustrating its clean presentation for business letters and everyday office mailing.
Top view of Cumberland DLX strip seal window security envelopes with office stationery, coffee cup and notebook on a modern wooden desk, showcasing the envelope's security lining and convenient mailing format.
Hands holding a Cumberland DLX white window security envelope above an office planner and desk workspace, highlighting the clear address window and premium professional design for confidential business correspondence.
Clean product display showing the Cumberland DLX white window security envelope with matching insert, highlighting the blue internal security pattern, address window and strip seal closure against a white background.
Single Cumberland DLX window envelope displayed on a professional office desk beside a laptop, pen and desktop accessories, illustrating its clean presentation for business letters and everyday office mailing.
Top view of Cumberland DLX strip seal window security envelopes with office stationery, coffee cup and notebook on a modern wooden desk, showcasing the envelope's security lining and convenient mailing format.
Hands holding a Cumberland DLX white window security envelope above an office planner and desk workspace, highlighting the clear address window and premium professional design for confidential business correspondence.
Clean product display showing the Cumberland DLX white window security envelope with matching insert, highlighting the blue internal security pattern, address window and strip seal closure against a white background.
Single Cumberland DLX window envelope displayed on a professional office desk beside a laptop, pen and desktop accessories, illustrating its clean presentation for business letters and everyday office mailing.
Top view of Cumberland DLX strip seal window security envelopes with office stationery, coffee cup and notebook on a modern wooden desk, showcasing the envelope's security lining and convenient mailing format.
Hands holding a Cumberland DLX white window security envelope above an office planner and desk workspace, highlighting the clear address window and premium professional design for confidential business correspondence.
Cumberland

Cumberland Envelope Strip Seal Window Security DLX 120 x 235mm White Box of 500

$38.94
$38.94
RRP $43.67
Or 4 payments of $9.74 with
Add items to a quote for bulk pricing, approvals, or purchase orders.

SKU: AA605314

Address once, on the document, and let the window do the rest

The Cumberland Envelope Strip Seal Window Security DLX 120 x 235mm White Box of 500 combines a window face with a security tint, so the printed address on your document shows through while the rest of the contents stay private.

Window envelopes remove a whole step from business mailing. Because the recipient address prints on the document itself and shows through the window, there is no separate envelope printing or label run, and no risk of a statement landing in the wrong envelope.

The security tint pattern shields the contents from casual reading, providing privacy for invoices, statements and other confidential correspondence, while the strip seal closes each envelope quickly without moisture.

The box of 500 suits accounts departments, practices and mailrooms running regular DLX correspondence, with dependable Cumberland quality in every box.

  • Strip seal peel-and-seal closure, no moisture required
  • Window face for direct addressing without labels
  • Security tint pattern conceals contents from view
  • DLX format 120 x 235mm for slightly longer document inserts
  • Box of 500 for consistent mailing supply
  • Business correspondence with window addressing and privacy
  • Confidential document mailing requiring security tint
  • DLX direct mail with strip seal convenience
  • Office and mail room DLX security envelope supply

Shipping

Shipping is kept simple with flat rates for selected areas and free shipping where applicable. Large, bulky, rural or out-of-area orders may require additional freight, and our team will contact you if this applies. For a more specific estimate, simply add this product to a quote or visit our shipping page.

Delivery Times

Melbourne, Sydney, Brisbane, Adelaide — 1 to 3 business days
Perth — 1 to 5 business days
Regional & Outer Areas — 3 to 7 business days

Returns

If you have questions about returns, please contact us or visit our returns page for full details.

Specifications

Brand: Cumberland

Series: Strip Seal Window Security Envelope

MPN: AA605314

Size: DLX 120 x 235mm

Closure: Strip seal

Window: Window with security tint

Stock: White

Pack Size: Box of 500

Unit: Box

Always Here to Help

Based around the Gold Coast, our customer support team brings deep office supplies knowledge, with most members having more than 10 years of industry experience. We are more than customer service agents. We are experienced office supply experts ready to help. Contact us below.

Contact Support Read all FAQs

Shipping & Delivery

Delivery time depends on your location, the size of your order, and the shipping option selected at checkout. For in-stock items, standard metro delivery in QLD, NSW and VIC is usually 1 to 7 business days. South Australia, Tasmania, Western Australia and the Northern Territory are generally 3 to 12 business days. Express delivery for eligible parcels under 3kg is usually 1 to 4 business days in QLD, NSW, ACT and VIC. Delivery estimates apply to in-stock items only and may vary due to carrier conditions or delays.

If you need to make a change to your order, please contact our team as soon as possible. Once an order has been processed or dispatched, changes may no longer be possible. You can contact us through our Contact Us page for assistance.

Mega Office Supplies ships orders Australia wide and occasionally internationally. The best avenue would be to contact us so we can customise a specific quote for you. Please note that associated international duties, taxes and levies will be the responsibility of the customer.

Returns, Refunds & Replacements

Mega Office Supplies accepts change-of-mind returns for unopened and unused products within 14 days from the invoice date, provided the item is returned in its original packaging and in resalable condition. Original shipping costs are not refundable, return shipping is the customer’s responsibility, and a restocking fee may apply depending on the product type and supplier. Some items, including electronics, assembled or installed furniture, food, beverages, medicines, custom-made products, and certain bulk or special-order items, are not eligible for return unless required under Australian Consumer Law.

If your order arrives faulty, damaged, or incorrect, please contact Mega Office Supplies as soon as possible. Where required under Australian Consumer Law, a repair, replacement, or refund will be offered. In these cases, Mega Office Supplies will cover reasonable return shipping costs, and photographic evidence may be requested to help process the claim. Items should be reported within a reasonable timeframe after delivery.

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