White window and door gasket weatherseal, push-fit into a groove on a frame, no adhesive required.
Technical diagram of the Aquamac Qlon AQ21 Schlegel window and door gasket weatherseal in white, showing dimensions in millimeters for profile width, height, and fitting depth.
White window and door gasket weatherseal, push-fit into a groove on a frame, no adhesive required.
Technical diagram of the Aquamac Qlon AQ21 Schlegel window and door gasket weatherseal in white, showing dimensions in millimeters for profile width, height, and fitting depth.
Schlegel

Aquamac Qlon AQ21 Schlegel Window and Door Gasket Weatherseal - White (Per Metre)Aquamac Qlon AQ21 Schlegel Window and Door Gasket Weatherseal - White (Per Metre)

£1.49 SKU: HS904
Order by 2pm for same-day dispatch
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Same-day dispatch on orders before 2pm

Sold per metre — enter the total length you need as the quantity. Replacing tired seals cures draughts and misting and takes minutes with no special tools.

Key benefits
  • Stops draughts, damp and misting - common cause of fogged windows
  • Replaces decayed window/door gaskets - simple DIY, saves on energy
  • Sold per metre buy what you need - match your exact frame length
Product overview

Aquamac AQ21 is designed for use with timber windows and doors. It is simply pushed into the groove on the frame, no self adhesive is required. 

Technical:

  • Seal Gap - 5.0mm Min to 7.5mm Max
  • Kerf Slot Width - 2.7mm Nominal
  • Minimum Kerf Slot Depth - 5.5mm
Delivery & Returns

How much is delivery?

UK Mainland Delivery is £2.99 on all items no matter how many you order!

Northern Ireland, Scottish Highlands, Channel Islands £6.00.

We do not offer International Delivery (Ireland, France, Spain etc).

When will my order be dispatched?

Orders before 3pm (Monday to Friday) are usually dispatched same day but may take up to 24 hours.

When will I receive my item?

We ship on 2 working day courier. Fully Tracked. Tracking will be emailed on dispatch. 

Special order items such as keyed alike locks will take longer to dispatch. Please refer to product description for lead times. 

I haven't received my item?

Please email us your name, order number and date of purchase.

We prefer email as it allows us time to research and respond.

Returns Information

We operate a 30 day refunds and return policy. 

If you change your mind you must return the product back to us within 30 days of delivery

Please include a copy of your invoice and a note stating reason for return. 

Additional keys, locks keyed alike or built to code are non refundable as they are personalised made to order goods.

Any refund, which is due to a fault or other defect, will include a refund of the applicable delivery charges otherwise not. 

It is the buyers responsibility to arrange the return of goods to us. We do not offer a collection service for returning items. 

Items must be returned including original product packaging and accessories.

We reserve the right to refuse any returns that do not comply with this policy.

Please post returns to the following address:

Home Secure (Online)

Unit 5, Brookfield Drive

Liverpool, L9 7AJ

United Kingdom

Frequently Asked Questions

The Aquamac Qlon AQ21 gasket is a high-performance weatherseal designed for windows and doors. It helps prevent drafts, water ingress, and heat loss, improving insulation and overall energy efficiency in your home.

Common signs include drafts, increased noise, water leaks, or visible wear and flattening of the seal. Damaged seals can reduce insulation and comfort. Learn more in How Do Window Seals Work.

The AQ21 gasket is designed to fit specific groove sizes and profiles. It’s important to match the shape and dimensions of your existing seal to ensure proper fit and performance.

Yes, replacing a gasket is typically a simple DIY job. You can remove the old seal and push the new one into the groove, ensuring it sits evenly for an effective seal.

Replacing worn seals improves insulation, reduces energy bills, prevents drafts and moisture, and enhances overall comfort in your home while extending the lifespan of your windows and doors.