Window Seal DeLonghi DLSA012 Frameless Side Door Window 390mm

The DeLonghi DLSA012 Frameless Side Door Window 390mm is a frameless window seal designed to reduce drafts and improve thermal insulation at side doors and window edges. With a compact 390mm width, it fits slim profiles and is intended for use where a discrete, low-profile sealing solution is preferred. The product helps maintain indoor comfort by limiting air infiltration and can contribute to reduced heating and cooling needs.

Advantages

This frameless window seal provides a slim, unobtrusive barrier against drafts while being simple to install and maintain. Its narrow 390mm width is suitable for tight gaps and narrow side door/window frames where larger seals would not fit. Constructed to provide consistent contact along the sealing surface, it helps reduce noise ingress and minor moisture penetration in addition to heat loss.

Suitable for

• Sealing gaps on side doors with narrow profiles
• Applying to frameless window edges where a discreet seal is needed
• Improving insulation on older windows and doors to reduce drafts
• Complementing existing weatherstripping in living rooms, bedrooms, hallways

Key specifications

• Type: frameless window/door seal
• Applicable width: 390 mm
• Function: draft reduction and thermal insulation
• Suitable surfaces: smooth window and door frames, glass edges, painted wood or metal
• Design: low-profile, narrow sealing strip for slim frames

How to use

Before installation, clean and dry the surface where the seal will be applied to ensure good adhesion and proper fit. Measure and cut the seal to the required length if necessary, aligning it carefully along the gap on the side door or frameless window edge. Press firmly along the entire length to secure contact; if the product uses adhesive backing, allow the recommended curing time before exposing it to regular use. Periodically inspect the seal for wear and replace if compression or damage reduces effectiveness.

Usage recommendations

For best performance, install the seal at moderate temperatures and on clean, dry surfaces. Avoid stretching the material during fitting to maintain consistent sealing pressure. Combine this seal with other weatherstripping elements for larger gaps or irregular frame profiles.