Endura Adjustable Cap Sill™ Full Narrow All-Aluminum Inswing Threshold – Golden Locks Inc .

Endura Adjustable Cap Sill™ Full Narrow All-Aluminum Inswing Threshold, Choose Width, Finish & Door Length

Endura
Z - Full Narrow Sills
$26.55
Door Handing
Choose Sill Widths :
Deck Finish :
Choose Door Length :

Part Numbers : ZAIAA36, ZAIAA45, ZAIAA56.

The Endura Z-Series ZAA3685FN Adjustable Cap Door Sill is designed with a durable all-aluminum construction and advanced composite substrate, providing long-lasting performance and dependable weather protection for exterior inswing doors.

Featuring the ZAIAA adjustable cap system, this sill allows the threshold cap height to be precisely adjusted after installation. The adjustable design ensures proper contact between the door sweep and the sill, helping reduce drafts, water infiltration, and debris entering beneath the door.

This high-performance sill system is engineered for residential entry doors and French door systems where durability, adjustability, and weather sealing are essential.

Series: Endura Z-Series

  • Model: ZAA3685FN, ZAA4565FN, ZAA5625FN
  • Sill Width: 3-11/16", 4-9/16", 5-5/8".
  • Cap Type: Adjustable Cap (ZAIAA)

  • Construction: All-aluminum sill with composite substrate

  • Application: Exterior inswing door thresholds for single and French door systems

  • Material: Heavy-duty extruded aluminum sill with adjustable cap system

  • Finish Options: Mill Aluminum or Bronze

  • Door Compatibility: Exterior inswing door units

  • Installation: Suitable for new construction or door replacement

  • Performance: Designed for reliable sealing and long-term threshold durability.

  • Model: ZAA3685FN, ZAA4565FN, ZAA5625FN

  • Sill Width: 3-11/16", 4-9/16", 5-5/8".

Key Features

  • Adjustable Cap Technology – Height-adjustable cap allows precise sealing against the door sweep.

  • All-Aluminum Construction – Durable extruded aluminum sill designed for long-term performance.

  • Composite Substrate Support – Reinforced base structure improves strength and stability.

  • Enhanced Weather Protection – Helps block drafts, moisture, dust, and debris.

  • Exterior Inswing Door Design – Engineered specifically for doors that swing inward.

  • Professional Door System Component – Part of the Endura Z-Series high-performance sill system.

  • Low Maintenance Design – Screw covers help prevent debris buildup and maintain smooth adjustment.

*Note: we know it’s fun to door-it-yourself, we recommend hiring a professional to replace your sill system. This product is recommended for uninstalled doors and professional use only.

Return and Refund Policy

Thank you for shopping at Golden Locks Inc.

If, for any reason, You are not completely satisfied with a purchase We invite You to review our policy on refunds and returns.

The following terms are applicable for any products that You purchased with Us.

Return, Cancellation & Special Order Policy

Golden Locks Inc. sells professional door hardware, security products, and custom-configured items.
Due to the nature of these products, the following policies apply to all purchases made through our website or store. By placing an order with Golden Locks Inc., the customer agrees to the terms outlined below.

Order Changes & Cancellation Policy :

• Customers may request order changes, modifications, or cancellations within 24 hours of placingnan order.
• Requests must be submitted by email to CS@GoldenLocksinc.com.
• After 24 hours, the order may already be processed, allocated from inventory, submitted to thenmanufacturer, entered into production, or prepared for shipment.
• Orders canceled after 24 hours are subject to a minimum 25% restocking and processing fee.
• Golden Locks Inc. reserves the right to refuse cancellation if the order has already been shipped, manufactured, customized, cut, keyed, or assembled.

Custom Orders / Special Orders (Non-Cancelable & Non-Returnable)

• Many products sold by Golden Locks Inc. are custom-configured or special-ordered directly from manufacturers.
• Examples include Emtek configured hardware, Hoppe multipoint trim sets, special finish hardware, multipoint lock components, keyed cylinders, and custom door hardware configurations.
• Once these orders are submitted to the manufacturer, they cannot be canceled, returned, or refunded. 

Standard Return Policy (Stock Items Only)

• Return request must be submitted within 30 days of delivery.
• Product must be unused, uninstalled, and in original packaging.
• Approved returns are subject to a 25% restocking fee and deduction of original shipping costs.
• Customer is responsible for return shipping costs.

Non-Returnable Products

• Custom or special-order hardware
• Emtek configured products
• Hoppe trim sets and multipoint hardware
• Keyed locks or cylinders
• Cut keys
• Electronic locks once powered or installed
• Safes once delivered or installed

• Clearance or discounted items
• Items showing signs of installation

Shipping Claims (Damage or Missing Items)

• Customers must inspect shipments immediately upon delivery.
• Claims for damage, missing parts, or incorrect items must be reported within 48 hours of delivery.
• Customers must provide photos of the product, packaging, and shipping label.

Chargebacks & Payment Disputes

• Customers agree to the policies stated on this page when placing an order.
• Golden Locks Inc. may provide order confirmations, shipping confirmations, tracking information, and policy acceptance records to payment processors in the event of disputes.

Return Authorization Required

• All returns require a Return Merchandise Authorization (RMA).
• Unauthorized returns may be refused.

Product Page Notice (Recommended)

• This product may be custom ordered or configured to your specifications.
• Orders may only be canceled or modified within 24 hours.
• After 24 hours a 25% restocking fee applies.
• Custom and special-order items are non-cancelable and non-returnable once processed.

Contacting Us

Please contact us with as much information about your return request as possible. We will need:

  • Your order ID.
  • First and last name.
  • Phone number : +1-800-385-7725
  • The items you wish to return (if your order contains multiple items.)
  • The reason for your return.
  • Any relevant return details or images.
  • By visiting this page on our website: https://goldenlocksinc.com/pages/contact-us

Not providing this information may delay your return.

Email

Please email us at CS@GoldenLocksinc.com to authorize a return.

Return Address

Golden Locks Inc.
16371 Gothard Street, Suite G
Huntington Beach, CA 92647
United States

Endura Adjustable Cap Sill™ Full Narrow All-Aluminum Inswing Threshold, Choose Width, Finish & Door Length
3-11/16" (Retrofit) / Mill / 2/6 (30") - $52.04
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